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91.
Restraint and Cancellation: Multiple Inhibition Deficits in Attention Deficit Hyperactivity Disorder
Schachar R Logan GD Robaey P Chen S Ickowicz A Barr C 《Journal of abnormal child psychology》2007,35(2):229-238
We used variations of the stop signal task to study two components of motor response inhibition—the ability to withhold a
strong response tendency (restraint) and the ability to cancel an ongoing action (cancellation)—in children with a diagnosis
of attention deficit hyperactivity disorder (ADHD) and in non-ADHD controls of similar age (ages 7–14 years). The goal was
to determine if restraint and cancellation were related and if both were deficient in ADHD. The stop signal task involved
a choice reaction time task (go task) which required a rapid response. The demand for inhibitory control was invoked through
the presentation of a stop signal on a subset of go trials which required that the ongoing response be suspended. The stop
signal was presented either concurrently with the go signal (restraint version) or after a variable delay (cancellation version).
In Study 1, we compared ADHD and control children on the cancellation version of the stop task; in Study 2, we compared ADHD
and controls on the restraint version. In Study 3, a subset of ADHD and control participants completed both tasks so that
we could examine convergence of these dimensions of inhibition. Compared to control participants, ADHD participants showed
a deficit both in the ability to cancel and to restrain a speeded motor response. Performance on the restraint version was
significantly correlated with performance on the cancellation version in controls, but not in ADHD participants. We conclude
that ADHD is associated with deficits in both restraint and cancellation subcomponents of inhibition. 相似文献
92.
Coordinated interpersonal timing (CIT) is a measure of "conversational congruence," or "attunement," and refers to the degree to which the temporal aspects of the vocal behaviors of co-conversationalists are correlated over the course of a conversation [Jasnow, M., & Feldstein, S. (1986). Adult-like temporal characteristics of mother-infant vocal interaction. Child Development, 57, 754-761]. In the present study, CIT was examined in a group of children who stutter (CWS), and a matched group of nonstuttering children (CWDNS; children who do not stutter), during conversations with either their mother or father recorded in two separate sessions (i.e., mother-child, father-child). Separate audio signals for both the child and parent (mother or father) were analyzed using AVTA software, which allowed for the quantification of sound and silence patterns in simultaneous speech. Squared cross-correlations (i.e., coefficients of CIT) for the durations of five vocal behavior states were obtained for each subject, through time series regression analysis using lag procedures. Vocal state behaviors within conversational turns included: vocalization, pauses, turn switching pauses, and interruptive and noninterruptive simultaneous speech. Results indicated that CWS and their parents showed mutual influence (i.e., CIT in both directions, child to parent and parent to child, or bi-directional influence) for more vocal state behaviors than did CWDNS and their parents. In addition, the CWS exhibited CIT with their parents for the durations of more vocal state behaviors than did the CWDNS (i.e., unidirectional influence). Findings suggest that children who stutter may be more easily influenced by the subtle timing aspects of conversation. Taken further, some of these children may perceive conversations with their parents as either challenging or difficult because of an element of unpredictability brought into conversations by the production of stuttering, the social skills of the child, and the nature of the parent-child relationship. Consequently, these children may be engaging in more pervasive coordination of the temporal characteristics of their speech to those of their conversational partner, as a mechanism by which to more effectively manage verbal interaction. EDUCATIONAL OBJECTIVES: After reading this paper, the learner will be able to: (1) describe the phenomenon of coordinated interpersonal timing (CIT); (2) summarize research findings in CIT as they apply to the verbal interactions of children and their parents; (3) summarize research findings in parent-stuttering child interaction, especially those related to the temporal aspects of both parent and child conversational speech, and (4) discuss the applicability of the findings from the present study to the treatment of childhood stuttering. 相似文献
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140 men (M age = 30.3 yr., SD = 5.7) from the Indian army in north India participated in the study. They were naive to yoga and were assigned to yoga and breath awareness groups randomly, with 70 in each group. 20 healthy males of comparable age (M age = 33.7 yr., SD = 7.0) formed a comparison group. Their performance in a digit-letter substitution task and a state anxiety subscale was assessed immediately before and after two 45-min. sessions. The two groups of soldiers practiced either yoga or breath awareness. The comparison group listened to meditation music. Digit-letter substitution scores increased in both groups of army personnel and in the comparison group. State anxiety decreased after yoga and listening to meditation music, but not after breath awareness. This suggests that even in army personnel naive to yoga, a yoga-based intervention or listening to meditation music could reduce anxiety while increasing performance on an attention task. 相似文献
97.
Benjamin H. Detenber Shirley S. Ho Rachel L. Neo Shelly Malik Mark Cenite 《Asian Journal of Social Psychology》2013,16(3):181-196
This national survey tracks changes in Singaporeans' attitudes toward lesbians and gay men (ATLG) and examines value predispositions, interpersonal contact, and mediated exposure as predictors of ATLG and acceptance of homosexuals. The study replicates and extends research done previously and addresses temporal shifts in values and views. Findings indicate that the relatively small positive change in ATLG from 2005 to 2010 was mainly due to values and demographic factors. The addition of several new predictive variables increased the variance explained for why people hold certain ATLG and their acceptance. Conformity to norms, intrinsic religiosity, Western orientation, interpersonal contact, and mediated exposure were significantly associated with both ATLG and acceptance of homosexuals. Perception of homosexuality as a choice was significantly associated with ATLG but not with acceptance of homosexuals. Asian orientation and extrinsic religiosity showed no significant association with either dependent variable. The findings are discussed in the context of a multicultural Asian society and future directions for research. 相似文献
98.
A deterministic perspective, believing choices are a function of hereditary and environmental factors, could theoretically impact perceived moral responsibility and lead to decreased blame in judging others. However, little consistent support has been found relating individual differences in deterministic attitudes to blame/tolerance for others. Perhaps, though, providing information regarding past background hardships affecting an individual's current lifestyle could potentially mediate harsh moralistic judgments of that individual. In the two studies reported here, we further explored the relation of free will/determinism scales to attitudes toward others as well as the effect of manipulating background information on the assignment of blame. As in previous research, little support was found for the relation of deterministic attitudes to tolerance toward others. However, judgments following manipulated information about hypothetical target persons supported the conclusion that target individuals are blamed less and given more sympathy if more information related to previous hardships is provided. In addition, in the second study perceived similarity to a target individual was associated with decreased blame/greater sympathy for a target with alcohol abuse problems. 相似文献
99.
Shirley A. Hill 《Journal of Loss and Trauma》2013,18(2):109-128
Abstract Several important demographic and economic factors have led to the shift in medical caregiving work from health care professionals to family members, primarily women. The growth in family caregiving has spawned numerous studies on how caring for the sick affects unpaid family caregivers. While caregiving work can be gratifying, most studies have focused on the negative effects, such as its adverse impact on the health and employment of caregivers. Only recently have we begun to expand this literature by examining the impact of ethnicity, specifically culture, on family caregiving. This study argues that African American families have retained specific cultural values and developed family systems which may lessen the negative impact of caregiving on families. 相似文献
100.
Shirley A. Murphy Janet Lohan Margaret Dimond Juanjuan Fan 《Journal of Loss and Trauma》2013,18(4):303-333
Abstract Social support provided by bereaved parents' networks was examined in this study. Seven dimensions of support were assessed over time. Of special interest to the investigators were the types and frequency of posttreatment contacts among bereaved parents who participated in an experimental support program. The study compared those who reported high versus low social support and high versus low numbers of network confidants on selected outcome and coping variables. The authors recruited a community-based sample of 171 bereaved mothers and 90 bereaved fathers whose 12- to 28-year-old children had died by accident, suicide, or homicide 4 months previously. Parents were randomly assigned to a 12-week bereavement program or control group. It was expected that intervention group parents would report more social network in involvement and greater satisfaction with support received than control group parents. This hypothesis was only partially supported. Only 20% of the parents who participated in the bereavement program remained in contact after the experimental program ended. Finally, significant differences detected between parents who reported high and low support were minimal and not sustained over time. The number of network confidants did not significantly affect the outcomes examined. However, in general, those with more confidants reported lower symptoms. Additional studies are needed to address these complex issues. 相似文献