Ambiguous data obtained by deception say nothing about social behavior. A balanced social psychology requires separating statistical hypotheses from substantive hypotheses. Neither statistical norms nor moral rules are psychological theories. Explanatory substantive theories stipulate the structures and processes underlying behavior. The Bayesian approach is incompatible with the requirement that all to-be-tested theories be given the benefit of the doubt.

That Haig and Sohn find the hypothetico-deductive approach wanting in different ways shows that multiple conditional syllogisms are being used in different stages of theory corroboration in the Popperian approach. The issues raised in the two commentaries assume a different complexion when certain distinctions are made.

The null-hypothesis significance-test procedure (NHSTP) is defended in the context of the theory-corroboration experiment, as well as the following contrasts: (a) substantive hypotheses versus statistical hypotheses, (b) theory corroboration versus statistical hypothesis testing, (c) theoretical inference versus statistical decision, (d) experiments versus nonexperimental studies, and (e) theory corroboration versus treatment assessment. The null hypothesis can be true because it is the hypothesis that errors are randomly distributed in data. Moreover, the null hypothesis is never used as a categorical proposition. Statistical (...) significance means only that chance influences can be excluded as an explanation of data; it does not identify the nonchance factor responsible. The experimental conclusion is drawn with the inductive principle underlying the experimental design. A chain of deductive arguments gives rise to the theoretical conclusion via the experimental conclusion. The anomalous relationship between statistical significance and the effect size often used to criticize NHSTP is more apparent than real. The absolute size of the effect is not an index of evidential support for the substantive hypothesis. Nor is the effect size, by itself, informative as to the practical importance of the research result. Being a conditional probability, statistical power cannot be the apriori probability of statistical significance. The validity of statistical power is debatable because statistical significance is determined with a single sampling distribution of the test statistic based on H0, whereas it takes two distributions to represent statistical power or effect size. Sample size should not be determined in the mechanical manner envisaged in power analysis. It is inappropriate to criticize NHSTP for nonstatistical reasons. At the same time, neither effect size, nor confidence interval estimate, nor posterior probability can be used to exclude chance as an explanation of data. Neither can any of them fulfill the nonstatistical functions expected of them by critics. (shrink)

The rhetoric-analytic critique of experimental psychology owes its apparent attractiveness to (a) some erroneous ideas about cognitive psychology and the rationale of experimentation, (b) the failure to distinguish between prior data and evidential data vis-à-vis the to-be-corroborated explanatory theory, and (c) evidential data owes their identity to a theory that is independent of the theory being tested. Theories in cognitive psychology are accepted because they can withstand concerted efforts to falsify them.

Some important meta-theoretical insights about experimental psychology are integrated into the "conjectures and refutations" framework in order to reinforce a realist's view of scientific methodology. Some issues which may be difficult for the realist's position are discussed. It is argued that there is no need for the evidential observation to mimic the phenomenon of interest; such a mimicry may even be counter-productive. A case is also made that questions about ecological validity are not relevant to the rationale of experimentation.

Entertaining diverse assumptions about empirical research, commentators give a wide range of verdicts on the NHSTP defence in Statistical significance. The null-hypothesis significance- test procedure is defended in a framework in which deductive and inductive rules are deployed in theory corroboration in the spirit of Popper's Conjectures and refutations. The defensible hypothetico-deductive structure of the framework is used to make explicit the distinctions between substantive and statistical hypotheses, statistical alternative and conceptual alternative hypotheses, and making statistical decisions and drawing theoretical (...) conclusions. These distinctions make it easier to show that H0 can be true, the effect size is irrelevant to theory corroboration, and “strong” hypotheses make no difference to NHSTP. Reservations about statistical power, meta-analysis, and the Bayesian approach are still warranted. (shrink)

A cross-sectional study to ascertain what the Singapore population would regard as material risk in the anaesthesia consent-taking process and identify demographic factors that predict patient preferences in medical decision-making to tailor a more patient-centered informed consent. A survey was performed involving patients 21 years old and above who attended the pre-operative evaluation clinic over a 1-month period in Singapore General Hospital. Questionnaires were administered to assess patients’ perception of material risks, by trained interviewers. Patients’ demographics were obtained. Mann–Whitney U (...) test and Kruskal-Wallis one-way analysis of variance was used. Statistical significance was taken at p < 0.05. Four hundred fourteen patients were eligible of which 26 refused to participate and 24 were excluded due to language barrier. 364 patients were recruited. A higher level of education, being employed and younger age group are factors identified in patients who wanted greater participation in medical decisions. Gender, marital status, type of surgery, and previous surgical history did not affect their level of participation. The complications most patients knew about were Nausea, Drowsiness and Surgical Wound Pain. Patients ranked Heart Attack, Death and Stroke as the most significant risks that they wanted to be informed about in greater detail. Most patients wanted to make a joint decision with the anaesthetist, instead of letting the doctor decide or deciding for themselves. Discussion with the anaesthetist is the preferred medium of communication compared to reading a pamphlet or watching a video. Age and educational level can influence medical decision-making. Despite the digital age, most patients still prefer a clinic consult instead of audio-visual multimedia for pre-operative anaesthetic counselling. The local population appears to place greater importance on rare but serious complications compared to common complications. This illustrates the need to contextualize information provided during informed consent to strengthen the doctor-patient relationship. (shrink)

Critical study of Sufism and Islamic philosophy with special reference of Ibn-i al-ʻArabī, 1165-1240.

We praise Arbib et al.'s Neural organization for its support of the integration of different levels of analysis, while noting that it does not always achieve what it advocates. We extend this approach into an area of neuropsychological activity in need of the structure offered by Organization at the intersection of the conflated fields of executive function and frontal lobe function.

In attempting to realize the tasks facing Soviet philosophers today, at a crucial moment in the life of our society, and in an attempt to contribute as best we can to clearing up the intellectual atmosphere of the country, we turn again to the question of what philosophy is, what its place in the life of society is, and how it can and must develop. The present article is dedicated to an examination of one of the aspects of this complex (...) question. (shrink)

What is the identity of the best regime in Aristotle's Politics? Although there are a few references to the best regime in Book III, the obvious answer is the regime discussed in Books VII and VIII. Aristotle calls it the best regime on numerous occasions and discusses it at great length. Yet, this is not the complete answer. In Book IV Aristotle makes certain curious remarks on the best regime that, on examination, do not fit the best regime of Books (...) VII and VIII. They lead, instead, to the discovery of a systematic, though quiet, teaching on a very different best regime in Book III. The Politics actually contains a complicated yet coherent teaching on two best regimes. Grasping this teaching is key to arriving at a proper understanding of the distinctive character of Aristotle's political thought. (shrink)

The present essay is intended to supply amplification, and where necessary correction, to my previous article on Anaxagoras' philosophy. Since its publication important essays on the same subject have been written by Mr. Cyril Bailey and by Mr. F. M. Cornford, and the present essay is also an attempt to examine some of the theories put forward in them. There are one or two points which may be stated at the outset. The conclusions which I put forward five years ago (...) I still believe to be valid. Some of the presentation of the evidence, however, I now see to be misleading and inadequate, notably the treatment of Aristotle's evidence, which I now hope to deal with more fully, and to show that it lends even stronger support to my thesis. I should also say that my former use of ‘Elements’ as a convenient collective term to refer to the four Empedoclean Elements has proved confusing, since it was never intended to suggest that these substances were elements in Anaxagoras' system. I now refer to them by their names in full. (shrink)