Objective: While behavioral recommendations regarding physical activity commonly focus on reaching demanding goals by proposing ‘thresholds’, little attention has been paid to the question of how much of a behavioral change is needed to make people feel that they have changed. The present research investigated this relation between actual and felt behavior change. Design: Using data from two longitudinal community samples, Study 1 and 2 comprised 614 (63 % women) and 398 participants (61 % women) with a mean age of (...) 40.9 years (SD = 13.6) and 42.5 years (SD = 13.4), respectively. Using a stage-approach, participants were classified into four groups by asking them at the respective second measurement to indicate whether they had become more physically active since their last participation six months ago (“Changers”), had tried but did not succeed in becoming more physically active (“Attempters”), were already physically active on a regular basis (“Regular Actives”), or had not tried to become more physically active (“Non-Attempters”). Physical activity was measured using the International Physical Activity Questionnaire (IPAQ), and fitness level was assessed as physical working capacity (PWC) via bicycle ergometry. Mixed ANOVAs including Time and Perceived Change as within and between factors were conducted, followed up by simple effect analyses. Results: Participants stating to have become more active in the past six months (Changers) showed a significant increase in vigorous physical activity but not in moderate physical activity, with an average of 6.8 (Study 1) and 10.6 (Study 2) MET-h per week in vigorous activity. Corroborating these findings, objective fitness also significantly increased in the group of Changers. No systematic change in moderate or vigorous physical activity was observed for the three other ‘non-changer’ groups (regular actives, attempters, non-attempters). Conclusion: The intensity of physical activity is the crucial variable for people’s perception of change in physical activity. Moderate physical activity seems not to be perceived as an effective means for behavior change. It thus might fail to unfold sufficient motivational impact, despite its known positive effects on health. (shrink)

In his De Iside et Osiride, Plutarch writes: "The Chaldaeans call two of the planets, which they consider benign gods, the authors or sources of everything that is good, two, on the other hand, the authors or sources of everything that is evil, and the three remaining planets they regard as being 'in between,' participating in the two opposite qualities.... It is worthwhile also to observe that the [Greek] philosophers are in accord with the Chaldaeans. For this reason Heraclitus [of (...) Ephesus] declared 'war the father, king and ruler of everything....' After him Empedocles designates the benign principle as 'love and friendship,' and at times as 'the harmony of the serene eye,' while at the same time he defines the evil principle as 'the cursed discord' and 'the bloody struggle....' Aristotle [by following this tradition] proclaims the [principle of] form and [the principle of] privation....". (shrink)

This study utilizes social exchange theory to argue that a more complete picture of the effects of China’s FDI in Africa needs to include non-economic factors, especially institutional forces that incorporate macro political considerations. We propose that economic dependencies created by China’s FDI in Africa are reciprocated by votes in international organizations, and thus, we hypothesize and test that increasing China’s FDI in African nations leads to increased political alignment in international affairs with those African nations. The proposed relationship, however, (...) will be weakened for African countries with stronger governance mechanisms. Using data for China’s FDI in African countries from 2001–2019, we find support for our hypotheses. We find that China’s economic engagement in Africa has resulted in increased political alignment on international issues evidenced by votes in United Nations organizations raising the possibility Africa’s most attractive resource may not be economic, but rather political. This, however, poses the question of whether votes are a ‘resource’ that can be traded for economic purposes. (shrink)

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