Taxometric research methods were developed by Paul Meehl and colleagues to distinguish between categorical and dimensional models of latent variables. We have conducted a comprehensive review of published taxometric research that included 177 articles, 311 distinct findings and a combined sample of 533 377 participants. Multilevel logistic regression analyses have examined the methodological and substantive variables associated with taxonic (categorical) findings. Although 38.9% of findings were taxonic, these findings were much less frequent in more recent and methodologically stronger studies, and in those reporting comparative fit indices based on simulated comparison data. When these and other possible confounds were statistically controlled, the true prevalence of taxonic findings was estimated at 14%. The domains of normal personality, mood disorders, anxiety disorders, eating disorders, externalizing disorders, and personality disorders (PDs) other than schizotypal yielded little persuasive evidence of taxa. Promising but still not definitive evidence of psychological taxa was confined to the domains of schizotypy, substance use disorders and autism. This review indicates that most latent variables of interest to psychiatrists and personality and clinical psychologists are dimensional, and that many influential taxonic findings of early taxometric research are likely to be spurious.

Sexual objectification, particularly of young women, is highly prevalent in modern industrialized societies. Although there is plenty of experimental and cross-sectional research on objectification, prospective studies investigating the prevalence and psychological impact of objectifying events in daily life are scarce. We used ecological momentary assessment to track the occurrence of objectifying events over 1 week in the daily lives of young women (N = 81). Participants reported being targeted by a sexually objectifying event - most often the objectifying gaze - approximately once every 2 days and reported witnessing sexual objectification of others approximately 1.35 times per day. Further, multilevel linear regression analyses showed that being targeted by sexual objectification was associated with a substantial increase in state self-objectification. Overall, individual differences had little impact in moderating these effects.

This chapter explores the ways in which the concept of "humanness" illuminates a wide and fascinating variety of psychological phenomena. After introducing the concept--everyday understandings of what it is to be human--we present a model of the diverse ways in which humanness can be denied to people. According to this model people may be perceived as lacking uniquely human characteristics, and thus likened to animals, or as lacking human nature, and thus likened to inanimate objects. Both of these forms of dehumanization occur with varying degrees of subtlety, from the explicit uses of derogatory animal metaphors, to stereotypes that ascribe lesser humanness or simpler minds to particular groups, to nonconscious associations between certain humans and nonhumans. After reviewing research on dehumanization through the lens of our model we examine additional topics that the psychology of humanness clarifies, notably the perception of nonhuman animals and the objectification of women. Humanness emerges as a concept that runs an integrating thread through a variety of research literatures.

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Recent evidence suggests that Americans underestimate wealth inequality in the United States and favor a more equal wealth distribution (Norton & Ariely, ). Does this pattern reflect ideological dynamics unique to the United States, or is the phenomenon evident in other developed economies—such as Australia? We assessed Australians’ perceived and ideal wealth distributions and compared them to the actual wealth distribution. Although the United States and Australia differ in the degree of actual wealth inequality and in cultural narratives around economic mobility, the Australian data closely replicated the United States findings. Misperceptions of wealth inequality as well as preferences for more equal distributions may be common across developed economies. In addition, beliefs about wealth distribution only weakly predicted support for raising the minimum wage, suggesting that attitudes toward inequality may not translate into preferences for redistributive policies.

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Although the negative ramifications of others objectifying the female body are well established, little research has examined whether certain portrayals of women are more susceptible to being objectified. The present study sought to examine the effect of two target characteristics—body size and clothing style—on objectification. One hundred and ninety-one Australian undergraduate participants (95 female; M age = 19.35 years) viewed either an image of an overweight woman or a thin woman, who was either dressed in plain clothes or lingerie. Participants then completed three tasks measuring their objectification of the woman to include attributions of mind, attributions of moral status, and a dot probe task assessing attention towards the target’s body relative to the face. Results indicate that overweight women, as well as those dressed in plain clothing, were attributed more agentic mental states and moral value, as well as elicited less of the objectifying gaze, than thin targets and those wearing lingerie. These findings suggest that contrary to popular opinion, there may be unforeseen benefits of being overweight.

This online experimental study examined the impact of viewing disclaimer comments attached to idealized social media images on 18- to 25-year-old American women’s (N = 164) body dissatisfaction, mood, and perceptions of the target. Furthermore, this study also tested whether thin ideal internalization or appearance comparison tendency moderated any effect. Viewing idealized images taken from social media had a negative influence on women’s body image, with or without the presence of disclaimers. Disclaimer comments also had no impact on women’s mood. They did, however, impact perceptions of the target, with women forming a less positive impression of the target if she attached disclaimer comments to her social media images. Thus, the results of this study suggest that the use of disclaimer comments or labels on social media may be ineffective at reducing women’s body dissatisfaction.