An assessment of the efficiency of and child preference for forward and backward chaining

Comparative studies of forward and backward chaining have led some to suggest that sensitivity to each teaching procedure may be idiosyncratic across learners and tasks. The purposes of the current study were threefold. First, we assessed differential sensitivity to each chaining procedure within children when presented with multiple learning tasks of similar content but different complexity. Second, we evaluated whether differential sensitivity to a chaining procedure during a brief task predicted differential sensitivity during the teaching of longer tasks. Third, we directly assessed children's preferences for each teaching procedure via a concurrent-chains preference assessment. Learners acquired all target skills introduced under both chaining conditions, but individual children did not consistently learn more efficiently with either procedure. Short-duration tasks were not predictive of performance in tasks of longer duration. Both chaining procedures were preferred over a baseline condition without prompting, but participants did not demonstrate a preference for either procedure.     

Effects of a history of differential reinforcement on preference for choice

The effects of a history of differential reinforcement for selecting a free-choice versus a restricted-choice stimulus arrangement on the subsequent responding of 7 undergraduates in a computer-based game of chance were examined using a concurrent-chains arrangement and a multiple-baseline-across-participants design. In the free-choice arrangement, participants selected three numbers, in any order, from an array of eight numbers presented on the computer screen. In the restricted-choice arrangement, participants selected the order of three numbers preselected from the array of eight by a computer program. In initial sessions, all participants demonstrated no consistent preference or preference for restricted choice. Differential reinforcement of free-choice selections resulted in increased preference for free choice immediately and in subsequent sessions in the absence of programmed differential outcomes. For 5 participants, changes in preference for choice were both robust and lasting, suggesting that a history of differential reinforcement for choice may affect preference for choice.     

Extinction, spontaneous recovery and renewal of flavor preferences based on taste-taste learning

This paper presents evidence of extinction, spontaneous recovery and renewal in a conditioned preferences paradigm based on taste-taste associations. More specifically, in three experiments rats exposed to a simultaneous compound of citric acid-saccharin solution showed a preference for the citric solution when the preference was measured with a two-bottle test (citric vs. water). Experiment 1 revealed that conditioned preferences were extinguished by repeated presentations of the citric acid solution without the saccharin. In Experiment 2, an additional test trial was introduced 21 days after the extinction treatment. Delayed testing resulted in the recovery of the extinguished preference for the citric, reflecting a spontaneous recovery effect. Experiment 3 revealed a preference renewal effect that was obtained when the extinction was conducted in a context different from that of the remaining experimental stages. The implications of these results are analyzed with attention paid to the mechanisms underlying learning of flavor preferences.     

Reliability of implicit self‐esteem measures revisited

This study investigated the internal consistencies and temporal stabilities of different implicit self‐esteem measures. Participants (N = 101) responded twice—with a time lag of 4 weeks—to five different tasks: the Implicit Association Test (IAT), the Brief Implicit Association Test (BIAT), the Affective Priming Task (APT), the Identification‐Extrinsic Affective Simon Task (ID‐EAST) and the Name‐Letter Task (NLT). As expected, the highest reliability coefficients were obtained for the self‐esteem IAT. Importantly, the internal consistencies and the temporal stabilities of the APT, the ID‐EAST, and the NLT were substantially improved by using material, structural, and analytic innovations. In particular, the use of the adaptive response‐window procedure for the APT, the computation of error scores for the ID‐EAST, and the computation of a double corrected scoring algorithm for the NLT yielded reliability coefficients comparable to those of the established IAT. Implications for the indirect assessment of self‐esteem are discussed. Copyright © 2010 John Wiley & Sons, Ltd.     

Emotional eating moderates the relationship between implicit measures of attitudes and chocolate consumption

Emotional eaters tend to eat more when emotionally aroused and their food‐related actions are associated with lack of control. Two studies tested the hypothesis that implicit measures of attitudes would be more strongly associated with the dietary behaviour of emotional eaters. In both Study 1 (N = 32) and Study 2 (N = 101), participants completed the DEBQ sub‐scale of emotional eating and implicit measures of attitude, explicit attitude and behaviour measures concerning chocolate consumption. In both studies, high emotional eaters were more likely than low emotional eaters to eat in line with their implicit measures of attitudes. The relationship between implicit measures of attitudes and food intake varies as a function of emotional eating style. Copyright © 2010 John Wiley & Sons, Ltd.     

Power becomes you: The effects of implicit and explicit power on the self

Some power cues are explicit, obvious and salient, while others are implicit, subtle and harder to detect. Drawing from research demonstrating that people assimilate to implicit cues and contrast from explicit ones, we suggest that implicit and explicit power cues have different effects on people. Two laboratory experiments found that when power cues were implicit, people in high power conditions assimilated to stereotypes of power; they had relatively higher independent self construals, and they were more likely to see themselves as autonomous from, rather than connected to, others. The opposite effect emerged when power cues were explicit. These effects were replicated in a third study, where working adults rated their own power at work and the explicitness of power cues in their workplaces. We also found that power and cue explicitness predicted co-worker support, and that this effect was mediated by self construals. These results suggest that the way power is conveyed and expressed can influence important outcomes in organizations.     

未成年人内隐攻击性特征的实验研究

以不同性质的词组为实验材料,以偏好组词为测量方法,随机抽取136名初一学生,采用被试内设计来探讨内隐状态下未成年人在不同攻击类型倾向性上的差异及其与性别间的关系。结果表明:偏好组词法测量内隐攻击性的有效性;未成年人同样存在明显的内隐攻击性;在内隐状态下,个体的身体攻击倾向性显著高于语言攻击倾向性并且具有较高的性别一致性。     

内隐记忆研究的回顾与展望

近年来,在对内隐记忆的存在性和本质特点进行探讨的过程中,该领域涌现出愈加丰富的实验室研究方法和理论观点,同时也引发了研究者对内隐记忆内涵的深入思考。逐渐细分的内隐记忆研究领域促使人们超越内隐记忆原有的理论框架,去建构一个整合外显记忆与内隐记忆,容纳记忆的无意识和意识过程的完整理论体系。     

Affective Influences of Selective Attention

ABSTRACT— Processes of selective attention and emotion operate together in prioritizing thoughts and actions. Abundant evidence suggests that emotionally salient stimuli and affective states can determine how visual attention is allocated. However, the brain regions mediating the effects of attention and emotion include shared and reciprocally connected structures. This raises an intriguing question about a reciprocal effect: Does attention also influence emotional responses? Here we review a series of studies that show that indeed it does. The results indicate that attention has a negative affective impact for otherwise neutral visual stimuli (abstract patterns and unfamiliar faces) that must be ignored or otherwise inhibited during the performance of a task. Finding that selective attention has distinct affective consequences for visual stimuli represents a new, fundamental discovery about the relation between the two main systems of prioritization in the human brain.