Ethical Considerations When Preparing a Clinical Research Protocol, Second Edition, provides a foundation for improving skills in the understanding of ethical requirements in the design and conduct of clinical research. It includes practical information on ethical principles in clinical research, how to design appropriate research studies, how to consent and assent documents, how to get protocols approved, special populations, confidentiality issues, and the reporting of adverse events. The book's valuable appendix includes a listing of web (...) resources about research ethics, along with a glossary, making it an invaluable resource for scientists collaborating in clinical trials, physician investigators, clinical research fellows, and more. Walks investigators and trainees through the identification of the ethical aspects of each section of a clinical research protocol Includes case histories that illustrate key points Contains information on conducting clinical research within the pharmaceutical industry Includes internet resources and worldwide web addresses for important research ethics documents and regulations Contains a chapter on Study Design and Methodology that is purposely expanded to explicitly address biostatistical considerations. (shrink)

The developments along the Mekong River, including in Cambodia, have boomed. There were 755 dams. Of these, 537 have been completed, and 152 have been planned or proposed. Of these, 52 were under construction, and 14 have been canceled or suspended. Of these dams, 392 were hydropower, 337 were irrigation, and 26 were other types (CGIAR, 2015). Even though some officials saw economic development as a result of the hydropower dam, the negative impacts of hydropower dams were seen by many (...) local experts and NGOs. The negative impacts include reduced fishing stocks and exacerbated socio-economic issues (Asia and the Pacific Policy Society, 2022). Experts have conducted some research on ecosystems and livelihoods, but there has been a lack of studies conducted by local communities to investigate their cross-border impacts as a result of the hydropower dam, despite the fact that local communities have been facing issues as a result of the Mekong Development. The community research protocol was developed to improve local communities' understanding of their local contexts and their confidence in negotiating with decision-makers and policymakers to address and respond to their needs and the findings of studies on local planning for sustainable community development. The paper aims to guide community leaders and staff in conducting community research on transboundary impacts on fisheries resources, ecosystems, and the livelihoods of local communities using their knowledge. (shrink)

In this paper, the author shows how research ethics committees must deal with illegality in the research protocol. He defines their legal duty by reference to the 2001 Clinical Trials Directive, and especially in the key areas of insurance, indemnity and no-fault compensation. The author is critical of the current GAfREC and recent guidelines issued by the Royal College of Physicians. He concludes that new rules are needed to replace the 2001 edition of GAfREC.

Research on mental health and illness presents a variety of unique ethical challenges. This article argues that institutional review boards (IRBs) can improve their reviews of such research by including the perspectives of individuals with the condition under study either as members of the IRB or as consultants thereto. Several reasons for including the perspectives of these individuals are advanced, with the discussion organized around a hypothetical case study involving the assessment of a novel talk-therapy modality. Having made (...) this case, the article goes on to explain how to implement the idea by building on a recent proposal by Rebecca Dresser, who argues in a number of publications for the inclusion of former research participants in the IRB review process. Finally, concerns about protecting reviewer and consultant confidentiality are addressed. (shrink)

Participants in clinical studies are frequently unable to remember study information for the duration of their participation in the research. Along with a nine-member work group and a seven-member advisory group, we determined that six elements of consent are necessary to uphold the validity of consent over time: awareness of ongoing participation; understanding the right to withdraw; understanding that withdrawal will not influence other treatment options; knowledge of the general purpose of the research; knowledge of potential risks of (...) participation; and understanding of the differences between traditional, individualized clinical care and standardized treatment during research participation. Based on these important elements, we developed an Assessment of Sustained Informed Consent as a tool to periodically review a protocol’s essential elements with its participants. We hope this will be a useful means of confirming research participants’ continued knowledge of the critical elements of consent, and of identifying those subjects who need reminding. (shrink)

Objective: To examine how research ethics boards review research projects in emerging disciplines such as functional neuroimaging.Design: To compare the criteria applied and the decisions reached by REBs that reviewed the same mock research protocol in functional neuroimaging.Participants: 44 Canadian biomedical REBs, mostly working in public university or hospital settings.Main measurements: The mock research protocol “The Neurobiology of Social Behavior” included several ethical issues operating at all three levels: personal, institutional and social. Data consisting of responses (...) to closed questions were analysed quantitatively. Qualitative analysis of open-question responses used mixed classification.Results: Similar criteria were used by most participating REBs. Yet the project was unconditionally approved by 3 REBs, approved conditionally by 10 and rejected by 30.Conclusions: The results point to the difficulty for REBs of reviewing all kinds of research projects, regardless of field, by relying on international and national norms framed in general terms and a possible variation between REBs in the interpretation of their mandate for the protection of research subjects. (shrink)

An axiom of medical research ethics is that a protocol is moral only if it has a “favorable risk-benefit ratio”. This axiom is usually interpreted in the following way: a medical research protocol is moral only if it has a positive expected value -- that is, if it is likely to do more good (to both subjects and society) than harm. I argue that, thus interpreted, the axiom has two problems. First, it is unusable, because it requires us (...) to know more about the potential outcomes of research than we ever could. Second, it is false, because it conflicts with the so-called “soft paternalist” principles of liberal democracy. In place of this flawed rule I propose a new way of making risk-benefit assessments, one that does comport with the principles of liberalism. I argue that a protocol is moral only if it would be entered into by competent subjects who are informed about the protocol. The new rule this eschews all pseudo-utilitarian calculation about the protocol’s likely harms and benefits. (shrink)

BackgroundOver the past two decades, Uganda has experienced a significant increase in clinical research driven by both academia and industry. This has been combined with a broader spectrum of research proposals, with respect to methodologies and types of intervention that need evaluation by Research Ethics Committees (RECs) with associated increased requirement for expertise. We assessed the competencies of REC members regarding review of research protocols with complex and emerging research study designs. The aim was (...) to guide development of a training curriculum to improve the quality of scientific and ethical review.MethodsThis was a cross-sectional study design, with quantitative data collection methods. Research Ethics Committee members completed a structured pre-coded questionnaire on current competence with complex and emerging study design. REC members were asked to outline a list of additional topics for which they needed training. Data from coded questions were entered into Epidata Version 3.1 and then exported to STATA Version14.1 for analysis. Descriptive analysis was performed and findings are presented using percentages and frequencies.ResultsWe enrolled 55 REC members from 6 RECs who have a total of 97 members. The majority of whom were males (56.4%, n = 31/55). The level of competence for review of selected study design was lowest for Controlled Human Infection Model (10.9%, n = 6) and reverse pharmacology design (10.9%, n = 6), and highest for cluster randomized study design (52.7%, n = 29) and implementation science research (52.7%, n = 29).ConclusionCompetence for review of research protocols with complex and emerging study design was low among participating REC members. We recommend prioritising training of REC members on complex and emerging study designs to enhance quality of research protocol review. (shrink)

A novel Protocol Ethics Tool Kit (‘Ethics Tool Kit’) has been developed by a multi-stakeholder group of the Multi-Regional Clinical Trials Center of Brigham and Women9s Hospital and Harvard. The purpose of the Ethics Tool Kit is to facilitate effective recognition, consideration and deliberation of critical ethical issues in clinical trial protocols. The Ethics Tool Kit may be used by investigators and sponsors to develop a dedicated Ethics Section within a protocol to improve the consistency and transparency between clinical (...) trial protocols and research ethics committee reviews. It may also streamline ethics review and may facilitate and expedite the review process by anticipating the concerns of ethics committee reviewers. Specific attention was given to issues arising in multinational settings. With the use of this Tool Kit, researchers have the opportunity to address critical research ethics issues proactively, potentially speeding the time and easing the process to final protocol approval. (shrink)

Examining the language and paradigms of science as rhetorical, that is, arising from the sociocultural forces that shape ideology, reveals androcentric assumptions that tend to thwart democratic public policy as well as effective methodology. This paper applies some recent feminist critiques of the biological sciences to the current research on the possible hormonal and genetic factors contributing to homosexuality, clarifying how this research perpetuates hierarchical binaries and suggesting ways to reconceptualize human sexuality through revised research protocols.

Furthermore, adults with decision-making capacity, including pregnant women, can currently accept interventions with moderate net risks for themselves in other settings (e.g., open f...

Background: although cognitive behavioural therapy is the gold standard treatments for bulimia nervosa (BN) and binge eating disorder (BED), evidence for its long-term efficacy is weak. Empirical research support the efficacy of brief strategic therapy (BST) in treating BN and BED symptoms, but its statistical significance still need to be investigated. Objective: to statistically test the long-term efficacy of the BST treatment protocols for BN and BED through one-year post-treatment. Methods: a two-group longitudinal study will be conducted. Participants (...) will be sequentially recruited for inclusion in a state-funded community psychotherapy clinic. Multilevel growth curve modeling will be used to estimate the average growth trajectories from baseline to one year after treatment termination for the severity of the BN and BED features as measured by the Eating Disorder Examination Questionnaire. Discussion: findings from this study will clarify the impact of BST in treating BN and BED symtoms. Conclusions: translating research into practice may inform how to ensure high-quality patient care. (shrink)

Background Clinical trials throughout the world must be evaluated by research ethics committees. No one has yet attempted to clearly quantify at the national level the activity of ethics committees and describe the characteristics of the protocols submitted. The objectives of this study were to describe 1) the workload and the activity of Research Ethics Committees in France, and 2) the characteristics of protocols approved on a nation-wide basis. Methods Retrospective cohort of 976 protocols approved (...) by a representative sample of 25/48 of French Research Ethics Committees in 1994. Protocols characteristics (design, study size, investigator), number of revisions requested by the ethics committee before approval, time to approval and number of amendments after approval were collected for each protocol by trained research assistant using the committee's files and archives. Results Thirty-one percent of protocols were approved with no modifications requested in 16 days (95% CI: 14–17). The number of revisions requested by the committee, and amendments submitted by the investigator was on average respectively 39 (95% CI: 25–53) and 37 (95% CI: 27–46), per committee and per year. When revisions were requested, the main reasons were related to information to the patient (28%) and consent modalities (18%). Drugs were the object of research in 68% of the protocols examined. The majority of the research was national (80%) with a predominance of single-centre studies. Workload per protocol has been estimated at twelve and half hours on average for administrative support and at eleven and half hours for expertise. Conclusion The estimated workload justifies specific and independent administrative and financial support for Research Ethics Committees. (shrink)

Multiple groups, including the National Bioethics Advisory Commission, the American Society of Clinical Oncology, the National Coalition of Comprehensive Cancer Centers, Workgroup 6 of the Summit Series on Cancer, PRIM&R, the Bell Report, and prominent ethicists have called for replacing the current system of local institutional review with central review for multisite national trials. We argue that this need is particularly acute in pediatric oncology, as shown by the experience of the Children's Oncology Group.

Researchers and others involved in the research enterprise from 12 African countries met with those working in ethics and oversight in the United States as part of an effort to develop research ethics capacity. Drawing on a wealth of experience among participants, discussions at the meeting revealed five categories of issues that warrant careful attention by those engaged in similar efforts as well as international policymakers and those charged with oversight of research. (1) Principal investigators should build (...) ‘true research teams’ where members of the team are meaningfully involved in decisions regarding the protocol and its implementation. (2)There should be explicit discussion about the ‘standard of care’ at the outset of project planning that includes clarification of the terminology that is being used. (3) While internationally collaborative research may involve populations that have inherent vulnerabilities, it is important to recognize the limitations of host country solutions (such as elaborated consent processes) and look for means to negotiate appropriate protections for those willing to participate. (4) In conducting research involving biological materials it would be prudent to develop material transfer agreements at the outset of the study to clarify expectations and to minimize the likelihood of harm. (5) Those engaged in internationally collaborative research need to be alert to the potential conflicts of interests of host country ethics committees during the approval process and to take measures to manage them if they indeed exist. (shrink)

Submission of study protocols to research ethics committees constitutes one of the earliest stages at which planned trials are documented in detail. Previous studies have investigated the amendments requested from researchers by RECs, but the type of issues raised during REC review have not been compared by sponsor type. The objective of this study was to identify recurring shortcomings in protocols of drug trials based on REC comments and to assess whether these were more common among industry-sponsored (...) or non-industry trials. (shrink)

Various forms of research are essential in emergency, disaster and disease outbreak situations, but challenges exist including the long length of time it takes to get research proposals approved. Consequently, it would be very advantageous to have an acceptable model for efficient coordination and communication between and among research ethics committees/IRBs and ministries of health, and templates for expediting ethical review of research proposals in emergency and epidemic situations to be used across the Caribbean and in (...) other low and middle income countries. This project involved a literature search and the interviewing of ministry of health officials, public health practitioners, and research ethics committee/IRB members in Jamaica and St. Lucia, to obtain suggestions for the best model for efficient coordination and communication between research ethics committees, and developed a template for expediting review of research protocols in epidemic and emergency conditions. (shrink)

Reviews of research and development collaborations with indigenous communities have exhibited numerous challenges related to researcher–community interactions. Based on many accounts of indiscretions, indigenous communities have begun generating conduct guidelines for researchers. However, the effectiveness of their chosen communication methods, guaranteeing appropriate behavior of the researchers, has not been established. This research contributes to an ongoing debate around appropriate ethical conduct of researchers in situ. The aim of this study was to investigate the interpretation accuracy of interaction guidelines (...) produced in the form of sketches by a Malaysian indigenous community. We provided eight interaction sketches to 57 students, in three continents, for interpretation and expression of their intended behavior. We found that most were unable to accurately interpret the sketches and describe intended behavioral responses. A major concern remains with the tendency to fall back on prior practices of “good” behavior, with minimal guidance on contextual practices. In an attempt to provide greater direction, we explored a speech bubble exercise with further 15 students. Our findings directly contribute to current efforts in formulating researcher–community interaction practices that should form the basis of ethical research in situ. (shrink)

OBJECTIVES: To review the characteristics and performance of research ethics committees in Spain in the evaluation of multicentre clinical trial drug protocols. DESIGN: A prospective study of 100 applications. SETTING: Forty-one committees reviewing clinical trial protocols, involving 50 hospitals in 25 cities. MAIN MEASURES: Protocol-related features, characteristics of research ethics committees and evaluation dynamics. RESULTS: The 100 applications involved 15 protocols (of which 12 were multinational) with 12 drugs. Committees met monthly (except one). They had (...) a mean number of 12 members, requested a mean of six complete dossiers and nine additional copies of the protocol with a mean deadline of 14 days before the meeting. All applications were approved except three (two of the three were open-label long-term safety trials rejected by the same committee), which were approved by the other committees involved. The mean time from submission to approval was 64 days. The mean time from submission to arrival of the approval document at our offices was 85 days. Twenty-five committees raised queries for 38 of the 97 finally approved applications. Impact of evaluation fee, number of members, queries raised and experience of committees on timings were not statistically significant. CONCLUSION: Obtaining ethical approval is time-consuming. There is much diversity in the research ethics committees' performance. A remarkable delay (> 20 days) exists between the decision and the arrival of the written approval, suggesting administrative or organisational problems. (shrink)

This article is a response to the letter from the Department of Health that was published in the previous edition of the Research Ethics Review upon the matter of the legal duty of the research ethics committees. It also deals briefly with the article published in the current edition of Research Ethics Review by Colin Parker on what appears to be the same topic.

The objective of this paper is to stimulate academic debate on embryo and fetal research from the perspective of the drafting of a protocol to the European Convention on Biomedicine. The Steering Committee on Bioethics of the Council of Europe was mandated to draw up such a protocol and for this purpose organised an important symposium on reproductive technologies and embryo research, in Strasbourg from the 16th to the 18th of December 1996.

In this paper we discuss differing discourses of research ethics committees and the clinical research field. Reflections on our experience of conducting research in a nursing home are used to highlight the tensions and inconsistencies that arise from these discourses and the need to behave ethically in the field. While accepting the need for adherence to guiding principles of duty based ethics, we have found that practical moral decisions in the field required that, as individual researchers, we (...) needed to exercise discretionary judgement, informed by the ethic of care and the concern for the well‐being of research participants. (shrink)

Vulnerabilities often characterize the availability of immigrant populations of interest in social behavioral science, public health, and medical research. Refugees, asylum seekers, and undocumented immigrants present unique vulnerabilities relevant to protocol development as well as ethics review procedures and criteria. This paper describes vulnerable populations in relation to the Belmont Report and US federal regulations for the protection of human subjects, both of which are commonly used in international research contexts. It argues for safeguards for immigrants comparable to (...) protections for such populations as pregnant women, prisoners, and children. The paper further presents a two-part model for the review of protocols that involve immigrants. The model is intended to help identify the risks to immigrants associated with participation in research, and to suggest how researchers can responsibly frame studies and access to research participant immigrants through community-based, and/or non-governmental organizations that serve immigrants and immigrant communities. (shrink)

Records the papers and commentaries, with an edited discussion, presented at an international consultation convened by the Council for International Organizations of Medical Sciences (CIOMS) to guide revision of the CIOMS International Ethical Guidelines for Biomedical Research Involving Human Subjects. The Guidelines, first issued in 1982 and then revised in 1993, are being updated and expanded to address a number of new and especially challenging ethical issues. These include issues raised by international collaborative trials of drugs in developing countries, (...) especially expensive drugs, and the use of placebo controls in randomized clinical trials. Others arise from the complexity of research in human genetics, including stem-cell research, and in reproductive biology. Throughout, particular attention is given to the difficult questions that arose during the heated debate over trials in developing countries, of short-duration zidovudine (AZT) therapy to reduce perinatal transmission of HIV. The International Ethical Guidelines for Biomedical Research Involving Human Subjects set out a code of research ethics that is widely used by ethical review committees and other bodies responsible for reviewing and overseeing the ethical design of studies and conduct of research. The revision of the Guidelines is being coordinated by CIOMS, in collaboration with WHO. The consultation centered on seven specially commissioned papers, authored by international experts that explore some of the more difficult issues in depth. Each is followed by an invited commentary, often expressing opposing views, and a summary of the issues or conclusions that emerged during the subsequent debate. The first paper, on justice in international research, deals with the question of whether proposals for research to be conducted in a developing country should make provision for future access of the population involved to the interventions under investigation. Also considered are questions that arise when research uses populations in developing countries to investigate interventions that will be of exclusive benefit to the industrialized world. Case studies of recent drug trials and their research protocols are discussed to illustrate circumstances in which use of populations in developing countries is justified or constitutes exploitation. Ethical challenges of the randomized controlled trial are considered in the second paper, which includes a discussion on the equitable distribution of benefits and risks, the use of placebo for controls, and the obligation to ensure that the participation of controls does not compromise their medical care or endanger their health. A paper on informed consent in international health research considers how cultural factors influence communication and language in the informed-consent process and respect for privacy and confidentiality in the research. Subsequent papers address issues in genetics research and reproductive biology, including the moral status of fetuses and the use of embryos in research, and examine the contribution which international human rights instruments can make in the application of the general principles of ethics to research involving human subjects. The final paper gives an overview of capacity building and the role of communities in international biomedical research. (shrink)

Efforts to build research capacity and capability in low and middle income countries (LMIC) has progressed over the last three decades, yet it confronts many challenges including issues with communicating or even negotiating across different cultures. Implementing global research requires a broader understanding of community engagement and participatory research approaches. There is a considerable amount of guidance available on community engagement in clinical trials, especially for studies for HIV/aids, even culturally specific codes for recruiting vulnerable populations such (...) as the San or Maori people. However, the same cannot be said for implementing research in global health. In an effort to build on this work, the Pakistan Institute of Living and Learning and University College London in the UK sought to better understand differences in beliefs, values and norms of local communities in Pakistan. In particular, they have sought to help researchers from high income countries (HIC) understand how their values are perceived and understood by the local indigenous researchers in Pakistan. To achieve this end, a group discussion was organised with indigenous researchers at Pakistan Institute of Living and Learning. The discussion will ultimately help inform the development of a cultural protocol for researchers from HIC engaging with communities in LMIC. This discussion revealed five common themes; (1) religious principles and rules, (2) differing concepts of and moral emphasis on autonomy and privacy, (3) importance of respect and trust; (4) cultural differences (etiquette); (5) custom and tradition (gift giving and hospitality). Based on the above themes, we present a preliminary cultural analysis to raise awareness and to prepare researchers from HIC conducting cross cultural research in Pakistan. This is likely to be particularly relevant in collectivistic cultures where social interconnectedness, family and community is valued above individual autonomy and the self is not considered central to moral thinking. In certain cultures, HIC ideas of individual autonomy, the notion of informed consent may be regarded as a collective family decision. In addition, there may still be acceptance of traditional professional roles such as ‘doctor knows best’, while respect and privacy may have very different meanings. (shrink)

We systematically reviewed contemporary literature to create an evidence-informed framework for research studies involving children and adolescents who can assent to participate. We searched seven citation indices to locate peer-reviewed research published in English language journals between 2000 and 2012. After screening 1,231 titles and abstracts for relevance, we assessed levels of evidence, extracted information, and analysed content from 87 articles. Most articles narrowly focused on paediatric assent barriers and facilitators for decision-making about research participation. No articles (...) provided a single, comprehensive ethical framework to guide the development and review of research assent protocols. We developed a 6-step framework that provides guidance to: prepare the child for the assent process; assess the child’s readiness to engage in decision making; discuss the elements of informed consent to the greatest extent possible; seek an initial assent decision; monitor and affirm assent; and respect the child’s role as a research participant. The PAeDS-MoRe framework also supports the creation of process models that address the unique, developmental needs of paediatric sub-groups, and guides the operationalization of jurisdictional requirements for ethical research involving children who are unable to provide free, informed and ongoing consent. (shrink)

This article presents data from the Growing up with Media study related to the implementation of a risk reduction protocol that resulted in three groups of youth: low-risk youth (no flags), youth flagged because of violence involvement and not clinically referred; and flagged youth who were referred to a team clinician due to additional risk considerations. Data are from 3,979 US youth 14–15 years of age recruited through social media between October 2018-August 2019. Four in ten youth were flagged for (...) review. Findings suggest that this methodology of identifying and reviewing cases appears to be working as intended: Not only did referred youth have more flags than non-referred youth, but post-hoc analyses suggested that these youth also had higher rates of psychosocial problems (e.g., non-victimization adversity, substance use, and depressed mood). The implementation of a risk reduction protocol such as the one described in this article adds a layer of human subject protection beyond the more standard list of websites and hotlines provided to all participants in most studies. This protocol leads the way for future studies to recreate a similar process to address concerning responses collected from survey research. (shrink)

ABSTRACT In Mexico informed consent is a legal requirement that ensures that patients who are invited to participate in clinical trials are provided with all the information needed to decide whether to participate, or not, in a research protocol. To improve our understanding of the problems physicians in developing countries encounter, when obtaining informed consent (IC), we examined their opinion on the importance of IC in clinical research, the quantity and quality of the information provided to the participant, (...) and the conditions in which the IC is obtained. Investigators considered that IC was useful to the patients, providing information that helped the patient to make a decision about his/her participation. Nevertheless, they felt that for some aspects of the research, like drug development in general, the use of placebos, and the randomization process, many of the patients were not capable of fully understanding the information provided, referring to the complexity of the information and illiteracy as the main reasons. Many investigators were not acquainted with some of the guidelines established in the Mexican General Law of Health,1 36% of them admitting to not having completed their IC letters. Most investigators gave only minutes to the patient to make a decision and 20% of ICs were obtained while the patient was hospitalized. Except for one investigator, all of them considered that specific training in medical ethics would be useful for the daily clinical work. (shrink)

Descriptive accounts of the nature of explanation in neuroscience and the global goals of such explanation have recently proliferated in the philosophy of neuroscience and with them new understandings of the experimental practices of neuroscientists have emerged. In this paper, I consider two models of such practices; one that takes them to be reductive; another that takes them to be integrative. I investigate those areas of the neuroscience of learning and memory from which the examples used to substantiate these models (...) are culled, and argue that the multiplicity of experimental protocols used in these research areas presents specific challenges for both models. In my view, these challenges have been overlooked largely because philosophers have hitherto failed to pay sufficient attention to fundamental features of experimental practice. I demonstrate that when we do pay attention to such features, evidence for reduction and integrative unity in neuroscience is simply not borne out. I end by suggesting some new directions for the philosophy of neuroscience that pertain to taking a closer look at the nature of neuroscientific experiments. (shrink)

As neural implants transition from engineering design and testing into human subjects research, careful consideration must be paid to the ethical elements in developing research protocols. Although these ethical aspects may be framed by the design choices of the engineering, a number of challenging choices arise. In spite of many ethical considerations for neural implant technologies being shared with generic research ethics questions, there are subsets needing special attention. Even in considerations requiring increased attention, substantial overlap (...) can be found with research ethics questions for general medical implants and for psychiatric pharmaceuticals. The special attention to specific ethical questions in neural implants exists because of the value placed on preserving cognition and control as well as our continued memory of significant past research abuses in neurosurgery. This paper focuses on three issues of particular saliency to neural implant testing: inclusion/exclusion of subjects with psychiatric conditions, consent withdrawal of research subjects, and enhancement as a goal. (shrink)