Developmental instability, fluctuating asymmetry, and human psychological science.

IF 3.4 Q2 BIOCHEMISTRY & MOLECULAR BIOLOGY
Steven W Gangestad
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引用次数: 3

Abstract

Developmental instability (DI) is an individual's inability to produce a specific developmental outcome under a given set of conditions, generally thought to result from random perturbations experienced during development. Fluctuating asymmetry (FA) - asymmetry on bilateral features that, on average, are symmetrical (or asymmetry deviating from that arising from design) - has been used to measure DI. Dating to half a century ago, and accelerating in the past three decades, psychological researchers have examined associations between FA (typically measured on bodily or facial features) and a host of outcomes of interest, including psychological disorders, cognitive ability, attractiveness, and sexual behavior. A decade ago, a meta-analysis on findings from nearly 100 studies extracted several conclusions. On average, small but statistically reliable associations between FA and traits of interest exist. Though modest, these associations are expected to greatly underestimate the strength of associations with underlying DI. Despite the massive sample size across studies, we still lack a good handle on which traits are most strongly affected by DI. A major methodological implication of the meta-analysis is that most studies have been, individually, woefully underpowered to detect associations. Though offering some intriguing findings, much research is the past decade too has been underpowered; hence, the newer literature is also likely noisy. Several large-scale studies are exceptions. Future progress depends on additional large-scale studies and researchers' sensitivity to power issues. As well, theoretical assumptions and conceptualizations of DI and FA driving psychological research may need revision to explain empirical patterns.
发展不稳定、波动不对称和人类心理科学。
发育不稳定(DI)是指个体在特定条件下无法产生特定的发育结果,通常被认为是由发育过程中经历的随机扰动造成的。波动不对称(FA) -双侧特征的不对称,平均而言,是对称的(或偏离设计的不对称)-已被用于测量DI。早在半个世纪前,心理学研究人员就研究了FA(通常通过身体或面部特征测量)与一系列感兴趣的结果之间的关系,包括心理障碍、认知能力、吸引力和性行为。十年前,一项对近100项研究结果的荟萃分析得出了几个结论。平均而言,FA和感兴趣的性状之间存在较小但统计可靠的关联。虽然这些关联不大,但预计会大大低估与潜在DI的关联强度。尽管研究的样本量很大,但我们仍然无法很好地处理哪些特征受DI的影响最大。荟萃分析的一个主要方法学含义是,大多数单独的研究在检测关联方面的能力严重不足。虽然提供了一些有趣的发现,但在过去的十年里,许多研究也一直缺乏动力;因此,较新的文献也可能是嘈杂的。一些大规模的研究是例外。未来的进展取决于更多的大规模研究和研究人员对电力问题的敏感性。此外,理论假设和概念的DI和FA驱动心理学研究可能需要修订,以解释经验模式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.70
自引率
0.00%
发文量
94
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