Three studies tested whether infant facial expressions selected to fit Max formulas (Izard, 1983) for discrete emotions are recognizable signals of those emotions. Forced-choice emotion judgments (Study 1) and emotion ratings (Study 2) by naive Ss fit Max predictions for slides of infant joy, interest, surprise, and distress. But Max fear, anger, sadness, and disgust expressions in infants were judged as distress or as emotion blends in both studies. Ratings of adult facial expressions (Study 2 only) fit a priori classifications. In Study 3, we coded the facial muscle components of faces shown in Studies 1 and 2 with the Facial Action Coding System (FACS; Ekman & Friesen, 1978) and Baby FACS (Oster & Rosenstein, in press). Only 3 of 19 Max-specified expressions of discrete negative emotions in infants fit adult prototypes. Results indicate that negative affect expressions are not fully differentiated in infants and that empirical studies of infant facial expressions are needed. ' For this reason, the debate about the existence of "basic" or discrete human emotions (cf. Camras, 1991; Fogel & Reimers, 1989; Ortony & Turner, 1990; Scherer, in press) does not hinge on evidence of whether emotions and their expressions are invariant throughout life.

Abstract:Schizophrenic (n = 21), bipolar (n = 18), and normal control subjects (n = 21) were compared on a word recognition measure of semantic priming. The task involved the presentation of related, neutral, and unrelated word pairs; the second word (target word) in each pair was presented in a degraded form. Facilitation was defined as the accuracy of target word recognition for the related word pairs minus accuracy for the neutral word pairs. Titration, achieved by manipulating the degradation of the target word, was used to maintain each subject's overall accuracy for related and neutral items at approximately 50%. This procedure minimized the artifactual effects of overall accuracy on the difference score. Schizophrenics exceeded both normal control subjects and bipolar subjects on facilitation. Bipolar subjects did not differ from control subjects. The results support Maher's hypothesis that semantic priming effects are heightened in schizophrenia. bipolar disorder | priming | schizophrenia | semantics | word recognition | stimulus

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