The development of preferences for own-race versus other-race faces in 3-, 6- and 9-month-old Caucasian infants

Visual preferences for pairs of African and Caucasian faces were repeatedly assessed in 3-, 6- and 9-month-old Caucasian infants with a preferential looking paradigm. Two different patterns of preference development were found: First, the spontaneous own-race preference at three months reported in the literature tilts to a preference for other-race faces at nine months passing through a null-preference at six months. This replicates the pattern recently reported for Asian infants [Liu et al. (2015). Development of visual preference for own- versus other-race faces in infancy. Developmental Psychology. doi:10.1037/a0038835]. Second, at all three ages fixation time towards Caucasian faces significantly reduces across the consecutive trial presentation. This is a similar effect as in novelty preference studies to occur after a sufficiently long familiarization phase. Both patterns can be explained in terms of an advantaged own-race face processing with the emerging Other-Race-Effect.     

Face threat sensitivity in negotiation: Roadblock to agreement and joint gain

Negotiation scholars and practitioners have long noted the impact of face, or social image, concerns on negotiation outcomes. When face is threatened, negotiators are less likely to reach agreement and to create joint gain. In this paper, we explore individual differences in face threat sensitivity (FTS), and how a negotiator's role moderates the relationship of his or her FTS to negotiation outcomes. Study 1 describes a measure of FTS. Study 2 finds that buyers and sellers are less likely to reach an agreement that is in both parties' interests when the seller has high FTS. Study 3 finds that job candidates and recruiters negotiate an employment contract with less joint gain when the candidate has high FTS, and that this relationship is mediated by increased competitiveness on the part of the high FTS candidates. The results support Deutsch's (1961) application of face theory ( Goffman, 1967) to negotiation.     

Interpreting infant emotional expressions: Parenthood has differential effects on men and women

Interpreting and responding to an infant's emotional cues is a fundamental parenting skill. Responsivity to infant cues is frequently disrupted in depression, impacting negatively on child outcomes, which underscores its importance. It is widely assumed that women, and in particular mothers, show greater attunement to infants than do men. However, empirical evidence for sex and parental status effects, particularly in relation to perception of infant emotion, has been lacking. In this study, men and women with and without young infants were asked to rate valence in a range of infant facial expressions, on a scale of very positive to very negative. Results suggested complex interaction effects between parental status, sex, and the facial expression being rated. Mothers provided more positive ratings of the happy expressions and more extreme ratings of the intense emotion expressions than fathers, but non-mothers and non-fathers did not. Low-level depressive symptoms were also found to correlate with more negative ratings of negative infant facial expressions across the entire sample. Overall, these results suggest that parental status might have differential effects on men and women's appraisal of infant cues. Differences between fathers’ and mothers’ perceptions of infant emotion might be of interest in understanding variance in interaction styles, such as proportion of time spent in play.     

Evidence for a confidence–accuracy relationship in memory for same- and cross-race faces

Discrimination accuracy is usually higher for same- than for cross-race faces, a phenomenon known as the cross-race effect (CRE). According to prior research, the CRE occurs because memories for same- and cross-race faces rely on qualitatively different processes. However, according to a continuous dual-process model of recognition memory, memories that rely on qualitatively different processes do not differ in recognition accuracy when confidence is equated. Thus, although there are differences in overall same- and cross-race discrimination accuracy, confidence-specific accuracy (i.e., recognition accuracy at a particular level of confidence) may not differ. We analysed datasets from four recognition memory studies on same- and cross-race faces to test this hypothesis. Confidence ratings reliably predicted recognition accuracy when performance was above chance levels (Experiments 1, 2, and 3) but not when performance was at chance levels (Experiment 4). Furthermore, at each level of confidence, confidence-specific accuracy for same- and cross-race faces did not significantly differ when overall performance was above chance levels (Experiments 1, 2, and 3) but significantly differed when overall performance was at chance levels (Experiment 4). Thus, under certain conditions, high-confidence same-race and cross-race identifications may be equally reliable.     

熟悉面孔与陌生面孔识别的差异

摘 要：面孔识别包括熟悉面孔识别和陌生面孔识别,两者之间的差异已经得到了多方面的证明。神经生理学的研究发现,识别陌生面孔和熟悉面孔所激活的脑区存在差异,与识别陌生面孔相比,识别熟悉面孔的脑区活动范围更大,包括双侧前额叶、单侧颞叶、海马回、杏仁核、后扣带回和右下额叶。并且也存在脑电的差异,比如 N400和P600的差异。对陌生面孔和熟悉面孔识别具有相同影响的因素有：遮挡、倒置等;具有不同影响的因素有：视角、表情、内外部特征等。文章也探讨了陌生面孔变成熟悉面孔的过程,以及在这一过程中起主要作用的编码形式等。     

社会支持和歧视知觉对流动儿童孤独感的影响:一项追踪研究

为了探讨流动儿童孤独感、歧视知觉、社会支持随时间变化的特点,以及社会支持、歧视知觉对孤独感的影响作用及机制,本研究从北京市公立学校和打工子弟学校选取1164名流动儿童,采用问卷调查的形式对流动儿童的孤独感、歧视知觉和社会支持进行了为期一年的追踪测查,回收有效追踪数据680份。对前、后测均参加的680名被试数据进行分析发现:(1)随着进入城市时间的增长,流动儿童的孤独感和歧视知觉显著减少,报告的社会支持显著增加;(2)流动儿童报告的社会支持、歧视知觉与孤独感之间是相互作用的动态过程。前测的歧视知觉和报告的社会支持共同影响前测孤独感;同时,前测孤独感又会影响后测歧视知觉和报告的社会支持,进而影响后测孤独感。并且在这个动态作用过程中,前、后测社会支持既能分别直接影响前、后测孤独感,前测社会支持还能通过后测社会支持和歧视知觉间接影响后测孤独感;而前、后测歧视知觉则只能分别直接影响前、后测孤独感;(3)前测歧视知觉和社会支持都不能直接影响后测的孤独感,而是需要通过影响后测歧视知觉和社会支持才能对后测的孤独感产生作用。     

Psychophysics of Remembering: The Discrimination Hypothesis

In a psychophysical approach to remembering, the events to be remembered are discriminated from other possibilities at the time of remembering, and not at the time of encoding or learning. The discrimination is specific to the retention interval at which remembering occurs, as shown by experiments demonstrating that discriminability and response bias are delay–specific. This article discusses a discrimination model for remembering that emphasizes the individual's history of learning about reward payoffs in similar experiences in the past. This model predicts the two characteristics of forgetting functions, initial discriminability and rate of forgetting.     

Searching for Evidence of Transfer between Drug Facilitators

Four autoshaping experiments with pigeons examined the transfer of facilitation between drug stimuli. In Experiment 1 the presence and absence of methadone or phencyclidine signaled which of two keylight CSs were followed by grain (US). A different keylight CS was reinforced in the absence of the drugs. The drugs facilitated responding to the CS with which they were trained but did not facilitate responding to the CS reinforced in the presence of the other drug. Thus, transfer of facilitation across drug stimuli was not obtained. In Experiment 2 one of the drug facilitators was replaced by a tone. No evidence of transfer of facilitative function was obtained between the tone and the remaining drug facilitator. In Experiment 3 transfer was again not found using a design similar to that used in Experiment 1 except that the drugs did not simultaneously signal nonreinforcement of a keylight CS. In Experiment 4 the procedures of Experiment 1 were employed except that drug facilitators were replaced by distinct visual stimuli surrounding the response key. Clear evidence of transfer between the visual facilitators was obtained. The lack of transfer of modulatory control by drug stimuli in Experiments 1-3, coupled with its occurrence in Experiment 4 and previous studies, suggests that stimulus control by drugs may differ in important ways from stimulus control by conventional stimuli.     

Two open source designs for a low‐cost operant chamber using Raspberry Pi™

After almost a century of use and development, operant chambers remain a significant financial investment for scientists. Small powerful single‐board computers such as the Raspberry Pi? offer researchers a low‐cost alternative to expensive operant chambers. In this paper, we describe two new operant chambers, one using nose‐poke ports as operanda and another using a touchscreen. To validate the chamber designs, rats learned to perform both visual discrimination and delayed alternation tasks in each chamber. Designs and codes are open source and serve as a starting point for researchers to develop behavioral experiments or educational demonstrations.