Cerebral lateralization for speech in deaf and normal children

The cerebral lateralization pattern for speech production in normal hearing and congenitally deaf children was studied using the dual-task paradigm. Performance under the verbal task conditions showed predicted left hemispheric dominance for speech production in the normal hearing children. No developmental trends in asymmetry were found, suggesting that speech lateralization is present in normal 3-year-old children. These data support the developmental invariance hypothesis of cerebral organization. Deaf children showed more symmetrical patterns of cerebral control for speech production. No developmental trends in functional brain organization were observed among prepubescent deaf children.     

Tracing response parameter preparation strategies using transition times

Latencies were measured using a modified four-choice reaction time (4-CRT) test procedure; the responses comprised forward and backward displacements of left- and right-hand levers. Two stimuli were presented, separated by an interval (ISI) of 25, 165, 415 or 815 msec. S1 designated which response should be readied; and on 62% of occasions, S2 indicated that the prepared response should be executed immediately (same trials). During transition trials, S2 specified which one of the alternative responses should be substituted. Same conditions produced significantly shorter reaction times. Transition latencies varied depending on the modification required: changing direction proved easier than changing either hand or hand and direction. This is compatible with a response coding strategy in which limb is designated before direction. Latencies and exchange function analyses that preparations were discontinued after response selection; even at the longest ISI, there was no convincing evidence of preparatory motor programming.     

Reliability and validity of children's reports of migraine headache symptoms

The present study was concerned with whether children's responses to a questionnaire correspond with parents' reports of the child's headache symptoms and whether these responses correlate with self-monitored headache activity. Twenty-eight children, ages 7 years–16 years, participated in the study. Using a questionnaire format, data on a wide variety of headache characteristics were gathered from parents and children. During the subsequent 4 weeks, children monitored their headache activity and medication usage. Results were generally supportive of the validity and reliability of children's reports via a questionnaire format. The responses to the frequency of headache and medication usage were found to predict the responses over the next month, whereas the response on the duration of headache did not. Significant correlations for most headache-symptom items indicated that children and parents agree on their presence and severity. This investigation is the first step in developing a systematic assessment procedure for childhood headache.     

Sex from Somewhere Liberally Different?

Philosophical Studies -     

QUALITIES MIDLIFE WOMEN DESIRE IN THEIR SEXUAL RELATIONSHIPS AND THEIR CHANGING SEXUAL RESPONSE

The present study focused on the association between the particular sexual qualities midlife women desired in themselves and their husbands and the changes in sexual response they were experiencing. In a U.S. sample of 280 women participating in the ongoing Midlife Women's Health Survey, 40% reported a change in their sexual response, more often as decrements than increases, although desiring more nongenital touching was frequently noted. Respondents wanted more change in their own than in their partners' sexual qualities. In addition, the desire to change sexual qualities in oneself and in one's husband was significantly related to many changes in sexual responsivity. These findings are discussed in the context of a woman-defined sexuality at midlife.