To what degree do situational influences explain spontaneous helping behaviour? A meta-analysis

2017 ◽  
Vol 28 (1) ◽  
pp. 227-256 ◽  
Author(s):  
G. Tyler Lefevor ◽  
Blaine J. Fowers ◽  
Soyeon Ahn ◽  
Samantha F. Lang ◽  
Laura M. Cohen
2019 ◽  
Vol 44 ◽  
pp. 201-212
Author(s):  
Nancy E. Snow ◽  

This book is an important example of how philosophers can make their work better known to the nonacademic public without sacrificing too much by way of rigor. Miller’s academic work stands at the intersection of philosophy and psychology: he draws on a wide array of psychological studies to help make the case for ‘mixed traits.’ He does the same here, though in a very accessible way. Here I remark on ways in which I think the book might have been stronger, and engage with some of the psychological studies. Finally, I introduce a recent meta-analysis of 24,512 controlled psychological studies of helping behavior (Lefevor et al., “To What Degree Do Situational Influences Explain Spontaneous Helping Behaviour?” 2017). I am curious whether Lefevor et al.’s conclusions will induce Miller to rethink his approach to helping studies or will have other implications for his future research.


2013 ◽  
Vol 280 (1768) ◽  
pp. 20131615 ◽  
Author(s):  
Adrian V. Jaeggi ◽  
Michael Gurven

Helping, i.e. behaviour increasing the fitness of others, can evolve when directed towards kin or reciprocating partners. These predictions have been tested in the context of food sharing both in human foragers and non-human primates. Here, we performed quantitative meta-analyses on 32 independent study populations to (i) test for overall effects of reciprocity on food sharing while controlling for alternative explanations, methodological biases, publication bias and phylogeny and (ii) compare the relative effects of reciprocity, kinship and tolerated scrounging, i.e. sharing owing to costs imposed by others. We found a significant overall weighted effect size for reciprocity of r = 0.20–0.48 for the most and least conservative measure, respectively. Effect sizes did not differ between humans and other primates, although there were species differences in in-kind reciprocity and trade. The relative effect of reciprocity in sharing was similar to those of kinship and tolerated scrounging. These results indicate a significant independent contribution of reciprocity to human and primate helping behaviour. Furthermore, similar effect sizes in humans and primates speak against cognitive constraints on reciprocity. This study is the first to use meta-analyses to quantify these effects on human helping and to directly compare humans and other primates.


2021 ◽  
Author(s):  
Yali Wei ◽  
Yan Meng ◽  
Na Li ◽  
Qian Wang ◽  
Liyong Chen

The purpose of the systematic review and meta-analysis was to determine if low-ratio n-6/n-3 long-chain polyunsaturated fatty acid (PUFA) supplementation affects serum inflammation markers based on current studies.


2013 ◽  
Vol 18 (1) ◽  
pp. 1-18 ◽  
Author(s):  
Robert J. Barth

Abstract Scientific findings have indicated that psychological and social factors are the driving forces behind most chronic benign pain presentations, especially in a claim context, and are relevant to at least three of the AMA Guides publications: AMA Guides to Evaluation of Disease and Injury Causation, AMA Guides to Work Ability and Return to Work, and AMA Guides to the Evaluation of Permanent Impairment. The author reviews and summarizes studies that have identified the dominant role of financial, psychological, and other non–general medicine factors in patients who report low back pain. For example, one meta-analysis found that compensation results in an increase in pain perception and a reduction in the ability to benefit from medical and psychological treatment. Other studies have found a correlation between the level of compensation and health outcomes (greater compensation is associated with worse outcomes), and legal systems that discourage compensation for pain produce better health outcomes. One study found that, among persons with carpal tunnel syndrome, claimants had worse outcomes than nonclaimants despite receiving more treatment; another examined the problematic relationship between complex regional pain syndrome (CRPS) and compensation and found that cases of CRPS are dominated by legal claims, a disparity that highlights the dominant role of compensation. Workers’ compensation claimants are almost never evaluated for personality disorders or mental illness. The article concludes with recommendations that evaluators can consider in individual cases.


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