Some effects of rhythmic context on melody recognition

The effects of rhythmic context on the ability of listeners to recognize slightly altered versions of 10-tone melodies were examined in three experiments. Listeners judged the melodic equivalence of two auditory patterns when their rhythms were either the same or different. Rhythmic variations produced large effects on a bias measure, indicating that listeners judged melodies to be alike if their rhythms were identical. However, neither rhythm nor pattern rate affected discriminability measures in the first study, in which rhythm was treated as a within subjects variable. The other two studies examined rhythmic context as a between subjects variable. In these, significant effects of temporal uncertainty due to the number and type of rhythms involved in a block of trials, as well as their assignment to standard and comparison melodies on a given trial, were apparent on both discriminability and bias measures. Results were interpreted in terms of the effect of temporal context on the rhythmic targeting of attention.     

Aversive potency of urine from dominant and subordinate male laboratory mice (Mus musculus): Resolution of a conflict

The present study assessed the aversive potency of urine collected from male albino mice that had been clearly identified as dominants/winners or subordinates/losers of paired aggression tests and then housed either individually or in a quasi-paired situation in which only a wire-mesh divider separated the two mice. This divider permitted constant visual, olfactory, auditory, and some tactile contact. The responses of individually tested, group-housed males were recorded when half of the substrate in a test box was treated with either water or one of the four urine types; the other half remained untreated. Significant preferences for the untreated half were found when the urine of winners or losers housed in individual metabolism cages or that of pair-housed dominants was used as the test stimulus. On the other hand, neither water nor the urine of cohabiting subordinate males was avoided. The present findings confirmed our earlier reports that the urine of dominant male mice was aversive, whereas that of their cohabiting subordinate partners was not. They also identified Sawyer's [1978] procedure of housing winners and losers in individual cages, with the consequent interruption of social contact as the likely reason for his failure to replicate our reports that subordinate male urine lacked aversive properties. The territorial implications of the aversive factor and other urinary signals are discussed.     

Exploring the Recovery of Non-offending Parents after a Child’s Sexual Abuse Event

A variety of factors influence a child’s recovery from a child sexual abuse (CSA) event including the non-offending parent’s role in the healing process of their child. The purpose of this study was to gain a better understanding of how non-offending parents recuperate from a CSA occurrence. By better understanding non-offending parents’ perspectives related to the healing process, health professionals can provide effective supports, programs, and services. We recruited and conducted in-depth qualitative interviews with 16 non-offending parents to explore their risk factors, protective factors, stressors, coping strategies, and perceptions of healing following their child’s sexual abuse event. We also invited parents to contribute specific ideas to improve programs and services offered to families of sexual abuse served by a child advocacy center located in an urban pediatric hospital. Our findings included five themes: (1) a variety of emotions are present; (2) family context influences recovery; (3) coping is different for everyone; (4) navigating the justice system is frustrating; and (5) healing is a process. The results of our study revealed that the non-offending parents that were managing their child’s sexual abuse event more productively were further along in the healing process (as compared with their counterparts) and had successfully processed their emotions, described less chaos in their family unit, employed positive coping strategies, and had found a way to move forward and accept a “new normal”. The findings of our study can be used to promote recovery and provide better services to non-offending parents following a CSA event.

     

Sex differences in dual-task interference between speaking and a manual force-production task

12 male and 12 female right-handed adults performed a unimanual force-production task alone and while sound-shadowing high frequency words. The secondary speech task disrupted right-hand performance by men and left-hand performance by women. The implications of these findings for intrahemisphere-interference models of dual-task performance are discussed.