Testing the Biobehavioral Family Model in pediatric asthma: pathways of effect

This study uses a laboratory-based multiinformant, multimethod approach to test the hypothesis that a negative family emotional climate (NFEC) contributes to asthma disease severity by way of child depressive symptoms, and that parent-child relational insecurity mediates the effect. Children with asthma (n = 199; aged 7-17; 55% male) reported parental conflict, parent-child relational security, and depressive symptoms. Parent(s) reported demographics, asthma history, and symptoms. Asthma diagnosis was confirmed by clinical evaluation and pulmonary function tests, with disease severity rated by an asthma clinician according to NHLBI guidelines. Family interactions were evoked using the Family Process Assessment Protocol, and rated using the Iowa Family Interaction Rating Scales. Path analysis indicated a good fit of data to the hypothesized model (chi2[1] = .11, p =.74, NFI = .99, RMSEA = .00). Observed NFEC predicted child depression (beta = .19, p < .01), which predicted asthma disease severity beta = .23, p < .01). Relational security inversely predicted depressive symptoms (p = -.40, p < .001), and was not a mediator as predicted, but rather an independent contributor. The findings are consistent with the Biobehavioral Family Model, which suggests a psychobiologic influence of specific family relational processes on asthma disease severity by way of child depressive symptoms.     

Teacher Efficacy In the Context of Teaching Low Achieving Students

This paper focused on the efficacy of Singapore teachers who teach low achieving adolescent students. Three dimensions of self-reported teacher efficacy—instructional strategies, classroom management, and student engagement—were examined in relation to teacher attributes and the teacher–student relationship. Data were obtained from the Teacher Self-Efficacy Scale Tschannen-Moran and Woolfolk Hoy (Teaching and Teacher Education 17:783–805, 2001) and the Teacher–Student Relationship Scale Ang (The Journal of Experimental Education 74:55–73, 2005). Significant differences between novice teachers and experienced teachers emerged in teacher efficacy beliefs in relation to instructional strategies, classroom management, and student engagement. Conflict in teacher–student relationship was found to predict teacher efficacy for teachers of low achieving students. Implications for teachers’ professional development were discussed.     

Affective learning increases sensitivity to graded emotional faces

How does the affective significance of emotional faces affect perceptual decisions? We manipulated affective significance by pairing 100% fearful faces with aversive electrical stimulation and hypothesized that increasing the significance of a stimulus via its prior history would lead to enhanced processing. After fear conditioning, participants viewed graded emotional faces that ranged from neutral to fearful. Faces were shown either in a color that was previously paired with shock or a color not paired with shock during conditioning. Increases in the frequency of "fearful" responses for faces shown in the shock-paired color were most robust for faces at intermediate intensity levels (40-60% fearful). Psychometric fits to the data revealed significant increased sensitivity for shock-paired relative to unpaired faces. Thus, despite identical physical features for shock-paired and unpaired stimuli (aside from the color, which was counterbalanced), more frequent (and faster) "fearful" responses were made when participants viewed affectively significant stimuli.     

Gender differences in adolescent concerns and emotional well-being: perceptions of Singaporean adolescent students

Although much has been written about adolescent adjustment and coping in Western countries, relatively little is known about similar issues in Asia. The authors examined the emotional adjustment of young adolescents in Singapore. They report adolescent concerns and how they influence adaptive functioning and emotional well-being. Data were obtained from three self-report measures: the Adolescent Concerns Measure (R. P Ang, W. H. Chong, V. S. Huan, & L. S. Yeo, in press), selected scales of the Behavioral Assessment System for Children Personality Self-Report (C. R. Reynolds & R. W. Kamphaus, 1998), and the Emotional Distress Scale of the Reynolds Adolescent Adjustment Screening Inventory (W. M. Reynolds, 2001). Emotional well-being emerged as a dominant concern for Singaporean youths with significant gender differences. Girls reported a more positive attitude toward school, better friendship skills, and stronger relationships with parents than did boys. However, girls registered significantly greater worries about self and emotional distress compared to boys. The authors discuss implications for teachers and mental health professionals.     

The organization of play fighting in the grasshopper mouse (Onychomys leucogaster): Mixing predatory and sociosexual targets and tactics

The body targets contacted, the type of contact made, and the patterns of defense and counterattack elicited by those attacks are examined in the play fighting of captive male and female pairs of grasshopper mice. The nape was the most frequently contacted body target, irrespective of the type of contact made, be it nosing, allogrooming, biting, or striking with a forepaw. The types of defense varied with both body area contacted and type of attack performed. Based on the topography and pattern of contact, it was concluded that grasshopper mice, as is the case for many other muroid rodents, primarily attack and defend targets otherwise contacted during precopulatory encounters. However, grasshopper mice, which are obligate carnivores, also attack and defend predatory targets, although less frequently than sociosexual targets. Surprisingly, predatory attacks were more likely to be counterattacked with predatory attacks, whereas sociosexual attacks were more likely to be counterattacked with sociosexual attacks. Conspecific aggression involves bites directed at the face, lower flanks, and dorsum. Neither the biting of these areas nor the tactics of attack and defense usually associated with such bites were observed during the juvenile interactions. There were no sex differences in either frequency or patterns of attack and defense in play fighting. The data presented for grasshopper mice shed light on the issue of mixing behavior patterns from multiple functional systems during play. Aggr. Behav. 26:319–334, 2000. © 2000 Wiley‐Liss, Inc.     

Targets,tactics, and the open mouth face during play fighting in three species of primates

The play fighting of many mammals involves the nonserious use of behavior patterns derived from serious fighting. A major question of theoretical importance has been that of how, given this overlap in patterns of behavior, the animals can distinguish between playful and nonplayful intent. One proposed solution is that animals use play signals to inform each other about the playful intent of their actions. The most widely reported play signal amongst primates is the open mouth play face. The manner in which this so-called signal functions is based on correlational evidence, with most reports simply noting its presence or absence in a given species. This study involved a detailed video-based analysis of the occurrence of open mouths during the play fighting of three species of primates. One captive troop each of ring-tailed lemurs, black-handed spider monkeys, and patas monkeys was used. By examining all open mouths in the context of the species-typical style of play fighting, several conclusions were empirically verified. 1) Most open mouths occur as a functionally necessary precursor for biting. 2) Some open mouths occur as a defensive threat which deters further contact. 3) The residual open mouths which may function as contact promoting play signals, constituted about 20–25% of all open mouths by the lemurs and patas monkeys, but less than 5% for spider monkeys. These species differences appeared to arise from two causes. Firstly, the spider monkeys used another signal, the head shake, in situations where lemurs and patas monkeys used open mouths. Secondly, the style of play fighting greatly influenced the frequency and duration of open mouths. This was most marked in the face-to-face combat style of patas monkeys. These findings show that comparative studies of the occurrence and function of play signals need to take into account species-typical styles of playful combat. Aggr. Behav. 23:41–57, 1997. © 1997 Wiley-Liss, Inc.     

The role of auditory feature detectors in the perception of speech

Attention, Perception, & Psychophysics - Two adaptation experiments were conducted to determine some of the sufficient acoustic properties for excitation of the feature detectors underlying...