Identifying Racial Minorities' Nationality: Non-verbal Accent as a Cue to Cultural Group Membership

Historically, racial appearance has been a common source of information upon which we categorize others, as have verbal accents. Enculturated non-verbal accents which are detected in facial expressions of emotion, hairstyle, and everyday behaviors, have also been found to exist. We investigated the effects of non-verbal accent on categorization and stereotyping when people are exposed to thin slices of behavior. The effects of racial essentialism, which inclines people to categorize and assess others by race, were also tested. In three studies, Australian participants were shown short, muted videos of target individuals performing everyday behaviors. The targets were of a minority (Asian) racial appearance, but half had been interracially adopted as babies and grew up in the Australian mainstream. The other half were foreign nationals who grew up in Asia. In Studies 1 and 2, Australian participants rated each target as Australian or foreign. In both studies, they correctly identified the targets at above chance levels. In Study 3, participants rated the targets on Australian and Asian stereotype traits. They were not told that some targets were Australian and some were foreign, but they nonetheless rated the congruent stereotypes more strongly. Lay theory of race moderated the effect of non-verbal accent, with a weaker effect among participants who endorsed racial essentialism. These preliminary findings reveal subtle effects of non-verbal accent as a cue to cultural group membership and invite further work into the effects of non-verbal accent on person perception and categorization processes.

The Expression of Ego Depletion

Is depleted self-control capacity detectable from thin slices of behavior? In four video-conditions (early-depleted; early-non-depleted; late-depleted; late-non-depleted) untrained observers rated target persons’ available self-control capacity in Experiments 1 and 2 (without sound) and in terms of fatigue and negative affect (Experiment 3). Videos were analyzed with Noldus FaceReader software (Experiment 4). Ego depletion could reliably be detected from thin slices of behavior. Nonverbal expressions coinciding with ego depletion are associated with cues signaling momentary levels of self-control capacity, fatigue, and some negative affective states. FaceReader analyses indicated that facial expressions coinciding with ego depletion are subtle and are extractable from facial dynamics rather than expression intensities. Results indicate that self-control depletion might not only have intrapersonal effects, but also interpersonal effects.

Thin Slices of Athletes’ Nonverbal Behavior Give Away Game Location: Testing the Territoriality Hypothesis of the Home Game Advantage

The present research investigated whether perceivers could detect who is playing at home or away in soccer matches based on thin slices of professional (Experiment 1) and amateur (Experiment 3) athletes’ nonverbal behavior prior to the match and whether perceivers rated athletes playing at home relatively higher on behavioral dimensions (Experiments 2 and 3) linked to territoriality. In Experiment 1 ( N = 80), participants watched short videos depicting soccer players prior to a UEFA Champions League match and rated whether athletes were more likely to be playing at home or away. In Experiment 2 (two groups N = 102 and N = 101), perceivers rated these videos in terms of assertiveness, dominance, and aggression. In Experiment 3, we replicated the procedure of Experiments 1 and 2 with different stimulus material from amateur soccer ( N = 112). Participants could significantly differentiate between home playing and away playing athletes (Experiment 1: d = 0.44 and Experiment 3: d = 1.07). Experiments 2 and 3 showed that perceivers rated professional and amateur soccer players higher on assertiveness ( d = 0.34–0.63), dominance ( d = 0.20–0.55), and aggression ( d = 0.16–0.49) when playing at home compared to playing away. Findings are supportive of evolutionary accounts of nonverbal behavior, ecological approaches to person perception, and the thin slices of behavior hypothesis by demonstrating that humans change their nonverbal behavior depending on game location. We discuss the relevance of the present findings for the home advantage in sports.

Agree or Disagree?

Consensus obtained in personality judgments based on thin slices of behavior was examined by manipulating the shared meaning of the traits being judged, the accountability for the judgments, and the amount of target information. 160 judges rated a total of 60 teachers on the Big Five personality dimensions. Consensus was approached from a judge and from a target perspective. A shared meaning had a negative effect on consensus in Extraversion ratings. Accountability had a consistently negative effect across consensus perspectives. A positive effect for amount of target information was found for Neuroticism. Additionally, it was shown that, under different conditions, judgments were based more or less on shared stereotypes. Results suggest that the degree to which we agree on our judgments of others can easily be manipulated by external influences, thus involving significant practical implication for various contexts.