Auditory-phonetic projection and lexical structure in the recognition of sine-wave words

Speech remains intelligible despite the elimination of canonical acoustic correlates of phonemes from the spectrum. A portion of this perceptual flexibility can be attributed to modulation sensitivity in the auditory-to-phonetic projection, although signal-independent properties of lexical neighborhoods also affect intelligibility in utterances composed of words. Three tests were conducted to estimate the effects of exposure to natural and sine-wave samples of speech in this kind of perceptual versatility. First, sine-wave versions of the easy and hard word sets were created, modeled on the speech samples of a single talker. The performance difference in recognition of easy and hard words was used to index the perceptual reliance on signal-independent properties of lexical contrasts. Second, several kinds of exposure produced familiarity with an aspect of sine-wave speech: (a) sine-wave sentences modeled on the same talker; (b) sine-wave sentences modeled on a different talker, to create familiarity with a sine-wave carrier; and (c) natural sentences spoken by the same talker, to create familiarity with the idiolect expressed in the sine-wave words. Recognition performance with both easy and hard sine-wave words improved after exposure only to sine-wave sentences modeled on the same talker. Third, a control test showed that signal-independent uncertainty is a plausible cause of differences in recognition of easy and hard sine-wave words. The conditions of beneficial exposure reveal the specificity of attention underlying versatility in speech perception.     

Modulation sensitivity in the perceptual organization of speech

In a spoken utterance, a talker expresses linguistic constituents in serial order. A listener resolves these linguistic properties in the rapidly fading auditory sample. Classic measures agree that auditory integration occurs at a fine temporal grain. In contrast, recent studies have proposed that sensory integration of speech occurs at a coarser grain, approximate to the syllable, on the basis of indirect and relatively insensitive perceptual measures. Evidence from cognitive neuroscience and behavioral primatology has also been adduced to support the claim of sensory integration at the pace of syllables. In the present investigation, we used direct performance measures of integration, applying an acoustic technique to isolate the contribution of short-term acoustic properties to the assay of modulation sensitivity. In corroborating the classic finding of a fine temporal grain of integration, these functional measures can inform theory and speculation in accounts of speech perception.     

Mirrors in the head: cultural variation in objective self-awareness

In a society where there are pronounced concerns for "face," people come to be especially focused on how they are being evaluated by others. We reasoned that Japanese should conceive of themselves in terms of how they think they are considered by others. This hypothesis was tested by contrasting Japanese and North American participants who were in front of a mirror with those who were not. In two studies, replicating past research, North Americans who were in front of a mirror were more self-critical and were less likely to cheat than were those who were not in front of a mirror. In contrast, Japanese participants were unaffected by the presence of the mirror.     

Group Identification under Conditions of Threat: College Students' Attachment to Country, Family, Ethnicity, Religion, and University Before and After September 11, 2001

Three classes of introductory psychology students at the University of Pennsylvania completed a survey including several measures of group identification on 20 March 2001, 15 September 2001, and 24 March 2003. Importance of country and university were rated higher four days after the 9/11 terrorist attacks than six months before or 18 months after. Scores on a 9-item scale of identification with country were higher immediately after 9/11 than at the other two assessments. Four theories (group dynamics, CORFing, TMT, SIT) are considered; none predicts the whole pattern of results observed. Discussion highlights group dynamics theory for understanding the increase in identification with country and introduces the possibility that the increase in identification with university might have been a response to experiencing 9/11 as loss of control. Discussion also highlights the value of assessing level of identification with multiple identity groups in order to see the complexity of identity dynamics.     

Watching your troubles away: television viewing as a stimulus for subjective self-awareness

Three studies explored the role of television viewing in eliciting subjective self-awareness and positive self-feelings. Study 1 assessed the effects of self-awareness manipulations via exposure to a neutral television program on actual-ideal discrepancies. Those who watched television showed significantly smaller self-discrepancies than those who did not, independent of mood. Study 2 demonstrated the ecological validity of this finding by replicating it with people watching television in their own homes. Study 3 investigated whether manipulations of self-feelings affected television watching. Results indicated that those who received failure feedback watched television longer than those in a control condition who likewise watched television longer than those who received success feedback. Television appears to be an effective stimulus to direct the focus away from oneself and to render people less aware of how they are falling short of their standards.     

Moral mires and the grip of the group: Morality as internalized group norms

I argue that morality is a set of internalized group norms. It is a reliable guide in a complex social world where group status and membership are not guaranteed by birth, but have to be asserted and maintained continuously. Morality is acquired through the process of socialization when children learn in their experience with peers, from observation of adults, and by instructional stories, such as fairy tales. Failure to internalize group norms results in a clinical condition of Psychopathy, or Antisocial Personality Disorder. Research into Antisocial Personality Disorder suggests that likely pathways of group norm internalization are states of arousal associated with social situations.