Evaluative conditioning (EC) refers to changes in the liking of an affectively neutral stimulus (the conditioned stimulus, or CS) following the pairing of that stimulus with another stimulus of affective value (the unconditioned stimulus, or US). In 3 experiments, the authors assessed contingency awareness, that is, awareness of the CS-US associations, by relying on participants' responses to individual items rather than using a global method of assessment. They found that EC emerged on contingency aware CSs only. Of note, whether the CSs were evaluated explicitly (Experiments 1 and 2) or implicitly (Experiment 3) did not make a difference. This pattern supports the idea that awareness of the CS-US associations may be required for valence acquisition via EC.

Alexithymia is characterized by difficulties in identifying, differentiating and describing feelings. A high prevalence of alexithymia has often been observed in clinical disorders characterized by low social functioning. This review aims to assess the association between alexithymia and the ability to decode emotional facial expressions (EFEs) within clinical and healthy populations. More precisely, this review has four main objectives: (1) to assess if alexithymia is a better predictor of the ability to decode EFEs than the diagnosis of clinical disorder; (2) to assess the influence of comorbid factors (depression and anxiety disorder) on the ability to decode EFE; (3) to investigate if deficits in decoding EFEs are specific to some levels of processing or task types; (4) to investigate if the deficits are specific to particular EFEs. Twenty four studies (behavioural and neuroimaging) were identified through a computerized literature search of Psycinfo, PubMed, and Web of Science databases from 1990 to 2010. Data on methodology, clinical characteristics, and possible confounds were analyzed. The review revealed that: (1) alexithymia is associated with deficits in labelling EFEs among clinical disorders, (2) the level of depression and anxiety partially account for the decoding deficits, (3) alexithymia is associated with reduced perceptual abilities, and is likely to be associated with impaired semantic representations of emotional concepts, and (4) alexithymia is associated with neither specific EFEs nor a specific valence. These studies are discussed with respect to processes involved in the recognition of EFEs. Future directions for research on emotion perception are also discussed.

In line with our subjective essentialist view of stereotypes (Yzerbyt, Rocher, & Schadron, 1997), we propose that two classes offactors that mutually reinforce each other influence the perception ofgroups. The perception ofa strong level ofsimilarity and organization among group members (i.e., group entitativity) suggests the existence ofa deep essence that would account for the detected regularities. Conversely, the existence ofnaive theories regarding the presence ofan underlying core encourages the searchfor resemblances and connections within the group. After a shortpresentation of the recent literature dealing with the concepts of entitativity and essentialism, we review a series ofstudiesfrom our laboratory showing the impact of entitativity on essentialism as well as the influence of essentialism on entitativity. We also provide empirical evidence for this bidirectional process from both the outsider and the insider perspective. Finally, we examine the potential role of cultural differences both in the ascription ofafundamental nature to an entitative assembly ofpeople and in the use ofa priori naive theories to create surface similarity among group members. As a set, these efforts point to the importance oftaking into account the constant dialogue between perceivers' theory-based explanations and group members' perceptual characteristics if one wishes to understand group stereotypes.

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