Adjustment of cognitive control to the frequency of dual-task interference

ABSTRACT

This study explored whether the control mechanisms recruited for optimising performance are similar for dual-task and interference-task settings. We tested whether the frequency of appearance of a secondary task resulted in an adjustment of anticipatory and reflexive forms of attentional control, as has been observed with other interference tasks (e.g. stroop and flanker). The results of two experiments demonstrated a proportion congruency effect (PCE): when a secondary task frequently appeared, primary task performance was slower. Additionally, there was a relative slowdown of dual-task performance in blocks wherein the secondary task appeared infrequently compared to blocks wherein it appeared frequently. However, this slowdown occurred when the primary task entailed a low level of control (Experiment 1) but was absent when it demanded a high level of control (Experiment 2). Overall, the results suggest that level of control can be adjusted to task demands related to the frequency of the secondary task.     

The influence of facial masculinity and voice pitch on jealousy and perceptions of intrasexual rivalry

The assessment of same-sex individuals as intrasexual competitors may depend in part on the perceived mate value of potential rivals. Men’s and women’s preferences for vocal and facial masculinity suggest that feminine women and masculine men may be perceived as more threatening intrasexual competitors. We tested the influence of men’s and women’s vocal and facial masculinity on preferences for who should accompany romantic partners on a weekend trip and on jealousy in response to imagined flirting. We found that men and women preferred their partners to be accompanied by people who had less masculine/feminine voices, and were more jealous in response to people who had relatively more masculine/feminine voices. Women, but not men, rated faces with exaggerated sex-typical characteristics as undesirable travel companions for their romantic partners and reported more jealousy in response to imagined flirting from such faces. We also found that participants who rated masculine male and feminine female stimuli as more attractive also perceived such stimuli as greater intrasexual threats, demonstrating individual differences in competition-related social perceptions. Our findings indicate that perceptions related to intrasexual competition are related to cues to underlying mate quality, which may aid in effective mate guarding.     

Social dominance orientation: Cause or ‘mere effect’?: Evidence for SDO as a causal predictor of prejudice and discrimination against ethnic and racial outgroups

The question of whether SDO is a cause or mere effect of intergroup attitudes and behaviors has been the subject of heated debate. Much of the research brought to bear on the question, however, has used cross-sectional data that is not best-suited for making causal inferences. Using data from a panel study that tracked UCLA undergraduates over several years, we find support for the notion that SDO is a cause, rather than ‘mere reflection’ of prejudice and discrimination against outgroups. Specifically, using cross-lagged analyses among White students, we show that SDO measured in 1996 has significant marginal utility for predicting prejudice against a series of ethnic outgroups, as well as self-reported ingroup friendship preference, four years later, controlling for their 1996 levels. Conversely, outgroup affect and ingroup friendship preference measured in 1996 fail to predict SDO levels in 2000 once 1996 SDO levels are taken into account. Implications of these analyses for the debate on the interpretation of SDO as a relatively stable orientation towards group-based hierarchy in society are discussed.     

竞争和合作对学龄前儿童分配模式的影响:心理理论和抑制控制的作用

研究考察在双方贡献不相等时,3~6岁儿童分配模式的发展趋势及其原因。98名儿童在竞争或合作情境下和玩偶进行钓鱼游戏,然后对6枚冰箱贴进行分配。结果发现5~6岁儿童比3~4岁儿童进行平均分配的比例更高,一级心理理论和抑制控制能力完全中介了年龄的效应。和竞争情境相比,合作情境促进儿童进行平均分配,同时情境调节了抑制控制对分配模式的影响。研究表明一级心理理论和抑制控制能力的发展能够解释学龄前儿童分配模式的变化。     

课堂情境中学生竞争对其成就归因和成就行为的影响

本研究把成就归因区分为倾向性成就归因和情境性成就归因两种类型,并分别检验了在课堂情境中学生之间的竞争对二者以及对成就行为的影响。被试是80名初中一年级学生。结果表明,(1)竞争对学生的倾向性成就归因没有明显影响,而显著地影响着学生的情境性成就归因;(2)竞争对学生随后成就行为没有明显影响;(3)倾向性成就归因对学生的成就行为的影响是显著的,但是它的这种影响却是间接发挥作用的。     

A NATURALISTIC THEORY OF ARCHAIC MORAL ORDERS

Abstract. Cultural evolution, producing group-level adaptations, is more problematic than the cultural evolution of individually confirmable skills, but it probably has occurred. The "conformist transmission," described by Boyd and Richerson (1985), leads local social units to become homogeneous in anadaptive, as well as adaptive, beliefs. The resulting intragroup homogeneity and inter-group heterogeneity makes possible a cultural selection of adaptive group ideologies.
All archaic urban, division-of-labor social organizations had to overcome aspects of human nature produced by biological evolution, due to the predicament of genetic competition among the cooperators. The universal norms found in archaic moral systems are seen as curbs to this human nature, reinforced by beliefs in invisible sanction systems and rewarding and punishing afterlives (as in heaven or reincarnation). Perhaps the ubiquity of lavishly wasteful royal funerals is to be explained as contributing to this function.     

Lexical competition and the acquisition of novel words

Three experiments examined the involvement of newly learnt words in lexical competition. Adult participants were familiarized with novel nonsense sequences that overlapped strongly with existing words (e.g. cathedruke, derived from cathedral) through repeated presentation in a phoneme-monitoring task. Experiment 1 looked at the immediate effects of exposure to these sequences, with participants showing familiarity with the form of the novel sequences in a two-alternative forced choice task. The effect of this exposure on lexical competition was examined by presenting the existing words (e.g. cathedral) in a lexical decision task. The immediate effect of the exposure was facilitatory, suggesting that the novel words had activated the representation of the closest real word rather than developing their own lexical representations. In Experiment 2, inhibitory lexical competition effects emerged over the course of 5 days for offset-diverging (e.g. cathedruke-cathedral) but not onset-diverging (e.g. yothedral-cathedral) novel words. Experiment 3 disentangled the roles of time and level-of-exposure in the lexicalization process and assessed the generality of the observed lexical inhibition using pause detection. A single, concentrated exposure session was used, which resulted in good recognition performance soon after. Lexicalization effects were absent immediately after exposure but emerged 1 week later, despite no intervening exposure to the novel items. These results suggest that integrating a novel word into the mental lexicon can be an extended process: phonological information is learnt swiftly, but full integration with existing items develops at a slower rate.     

Imagining intergroup contact promotes projection to outgroups

Three studies investigated the conditions under which imagining intergroup contact would lead to greater projection of positive traits to outgroups. In Experiment 1 (Mexico) imagined contact predicted greater self-outgroup positive trait overlap for majority but not minority ethnic groups. In Experiment 2 (UK) imagined contact led to greater projection of positive traits to the outgroup for lower compared to higher identifiers. In Experiment 3 (UK) imagined contact led to greater projection of positive traits to the outgroup when the self was salient compared to when the outgroup was salient. These findings suggest that the social cognitive consequences of imagined contact are most favorable for intergroup relations when the personal self, but not social self, is salient. We discuss the implications of these findings for a developing model of imagined contact effects.     

Negational racial identity and presidential voting preferences

Previous research suggests that narrow identification with one’s own racial group impedes coalition building among minorities. Consistent with this research, the 2008 Democratic primary was marked by racial differences in voting preferences: Black voters overwhelmingly preferred Barack Obama, a Black candidate, and Latinos and Asians largely favored Hillary Clinton, a White candidate. We investigated one approach to overcoming this divide: highlighting one’s negational identity. In two experiments simulating primary polling procedures, Asians and Latinos randomly assigned to think of and categorize themselves in negational terms (i.e., being non-White) were more likely to vote for Obama than participants focused on their affirmational identity (i.e, being Asian or Latino), who showed the typical preference for Clinton. This shift in voting preference was partially mediated by warmer attitudes towards other minority groups. These results suggest that negational identity is a meaningful source of social identity and demonstrate that whether one thinks about “who one is” versus “who one is not” has far-reaching impact for real-world decisions.