Perceptual equivalence of acoustic cues in speech and nonspeech perception

Trading relations show that diverse acoustic consequences of minimal contrasts in speech are equivalent in perception of phonetic categories. This perceptual equivalence received stronger support from a recent finding that discrimination was differentially affected by the phonetic cooperation or conflict between two cues for the /slIt/-/splIt/contrast. Experiment 1 extended the trading relations and perceptual equivalence findings to the /sei/-/stei/contrast. With a more sensitive discrimination test, Experiment 2 found that cue equivalence is a characteristic of perceptual sensitivity to phonetic information. Using “sine-wave analogues” of the /sei/-/stei/stimuli, Experiment 3 showed that perceptual integration of the cues was phonetic, not psychoacoustic, in origin. Only subjects who perceived the sine-wave stimuli as “say” and “stay” showed a trading relation and perceptual equivalence; subjects who perceived them as nonspeech failed to integrate the two dimensions perceptually. Moreover, the pattern of differences between obtained and predicted discrimination was quite similar across the first two experiments and the “say”-“stay” group of Experiment 3, and suggested that phonetic perception was responsible even for better-than-predicted performance by these groups. Trading relations between speech cues, and the perceptual equivalence that underlies them, thus appear to derive specifically from perception of phonetic information.     

Development of infant ear asymmetries for speech and music

Groups of 2-, 3-, and 4-month olds were tested for dichotic ear differences in memory-based phonetic and music timbre discriminations. A right-ear advantage for speech and a left-ear advantage (LEA) for music were found in the 3- and 4-month-olds. However, the 2-month-olds showed only the music LEA, with no reliable evidence of memory-based speech discrimination by either hemisphere. Thus, the responses of all groups to speech contrasts were different from those to music contrasts, but the pattern of the response dichotomy in the youngest group deviated from that found in the older infants. It is suggested that the quality or use of lefthemisphere phonetic memory may change between 2 and 3 months, and that the engagement of right-hemisphere specialized memory for musical timbre may precede that for left-hemisphere phonetic memory. Several directions for future research are suggested to determine whether infant short-term memory asymmetries for speech and music are attributable to acoustic factors, to different modes or strategies in perception, or to structural and dynamic properties of natural sound sources.     

Conditioned fear-induced opiate analgesia on the Formalin test: Evidence for two aversive motivational systems

Fear, conditioned to apparatus cues associated with electric shock, was measured by recording freezing. Pain reactivity was simultaneously measured by recording the paw-licking and paw-lifting response to Formalin injected into a paw. Stimuli associated with shock produced freezing and inhibited the responses to Formalin; whereas various control stimuli did neither. These results indicate that one of the responses to fear is analgesia. The opiate antagonist naltrexone reversed this analgesia, suggesting that the analgesia has an opiate nature. The results were interpreted in terms of a two-aversive-motivational-systems model. One system, the pain system, is instigated by tissue-damaging stimuli and produces recuperative behavior that functions to promote healing. The other system, the fear system, is triggered by conditioned fear stimuli. It produces species-specific defensive reactions and also inhibits the pain system via analgesia.     

Assessment as Intervention: A Pilot Study of Short-Term Dyadic Treatment

Assessment, as an intervention, is a hallmark of infant mental health that has not been evaluated for treatment effectiveness. A comprehensive assessment framework was standardized as a short-term intervention model and evaluated for treatment effects based on dynamic systems theory of change. The transdisciplinary interaction-based assessment model embeds nondidactic developmental guidance interpretations in the context of eliciting child functional capacities while engaging the caregiver in direct co-observation and reflection to challenge inflexibility in parents’ representations. The findings of this pilot project, with a community sample of Spanish- and English-speaking families, suggest this assessment as intervention model has the potential to promote an active process of change in parents’ representations toward a “disorderly,” or unstable state, possibly both in perceptions of self as caregiver and in representations of the child. Clinically, this disorderly state would be seen as an opportunity that could perpetuate the change process, recognizing disorderliness of representation as an opening, as emerging permeability of representations. Results indicate that this caregiver-clinician collaborative process is associated with caregiver reports of decreased distress, increased empathy for child’s difficulties, and changes in caregiver representations. A subset of families, caregivers who hold immutable views of their children, are less responsive to the developmental guidance approach and may require different or more long-term treatment.     

Health locus of control and health behaviour: results from a nationally representative survey

The present study aims to examine the association between sociodemographic variables and health locus of control (HLC) as well as HLC and health behaviour. Data from a representative sample of the German adult population, the Telephone Health Survey 2006 (GSTel06; N=5542), were used. A German version of the MHLC (multidimensional HLC) scales was used. Associations between sociodemographic variables and three dimensions of HLC (internal, powerful others and chance) and between HLC and health behaviour were calculated. In particular, higher age, low socioeconomic status and migration background were associated with higher HLC scores on the powerful others and chance dimension. Subjects scoring high on the chance dimension did less sports activity (OR: 0.8; CI: 0.7-0.9), had less medical teeth protection (0.7; 0.6-0.9), fewer health courses (0.8; 0.7-0.9) and conducted less systematic information-seeking (0.8; 0.6-0.9), while results regarding internal and powerful others HLC remained mainly insignificant. High chance HLC can be regarded as risk factor of adequate health behaviour. The associations between high chance HLC, low socioeconomic status and migration background emphasise the need for treatments and prevention programmes tailored to modify the high chance HLC of socially disadvantaged populations.     

Predicting Deviant Behavior by Neutralization: Myths and Findings

ABSTRACT

Neutralization theory states that deviant behavior is determined by the use of accounts rather than by an individual's acceptance of a social norm. A critical review of neutralization theory shows that (a) neutralization is only a weak predictor of norm-contradictive behavior, (b) high norm-acceptance seems to amplify the neutralization-behavior effect but might not be a prerequisite, and (c) in contrast to Minor's hardening process assumption, prior norm violation should increase impact of neutralization on behavior rather than decrease it. Future directions of neutralization research are suggested, based on a situational analysis of the neutralization process.