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41.
Qiu S Korwek KM Pratt-Davis AR Peters M Bergman MY Weeber EJ 《Neurobiology of learning and memory》2006,85(3):228-242
The heterozygote reeler mouse (HRM) shows many neuroanatomical and biochemical features that are also present in some human cognitive disorders, such as schizophrenia. In the present study, hippocampal dependent plasticity and cognitive function of the HRM were characterized in detail in an attempt to reveal phenotypic functional differences that result from Reelin haploinsufficiency. The HRM and wild type mice show similar levels of overall activity, coordination, thermal nociception, startle responses, and anxiety-like behavior. In addition, both genotypes show similar shock threshold, identical cued freezing behavior and comparable spatial learning in Morris water maze tasks. However, a significant reduction in contextual fear conditioned learning was observed in the HRM. Electrophysiological studies in hippocampal CA1 synapses revealed a plethora of differences between genotypes. The HRM exhibits reduced field excitatory postsynaptic potentials in responses to similar synaptic inputs, lowered paired pulse facilitation ratio and impaired long-term depression and tetanus-induced long-term potentiation (LTP). Also, deficits were detected in LTP elicited by theta burst stimulation or by a whole cell pairing protocol. These physiologic differences could not be accounted for by changes in the overall amount of glutamate receptor subunits. In addition, it was determined that network-driven excitatory and inhibitory activities recorded in CA1 pyramidal neurons showed that the HRM had comparable amplitude and frequency of spontaneous excitatory postsynaptic currents, but a marked reduction in spontaneous inhibitory postsynaptic currents. Thus, the HRM exhibits a specific hippocampal-dependent learning deficit accompanied with a pronounced impairment of hippocampal plasticity and functional inhibitory innervation. 相似文献
42.
Samuel M. Turner Melinda A. Stanley Deborah C. Beidel Lloyd Bond 《Journal of psychopathology and behavioral assessment》1989,11(3):221-234
The Social Phobia and Anxiety Inventory (SPAI) is a new instrument composed of social phobia and agoraphobia subscales. The latter scale is used to detect social anxiety that may result from agoraphobia. The SPAI's construct validity was assessed through several procedures. First, confirmatory factor analyses were conducted to validate the existence of the two subscales. Second, exploratory factor analyses examined the underlying structure of the social phobia subscale. Third, a Q factor procedure determined if different anxiety diagnostic groups could be differentiated by their SPAI response pattern. The results confirmed the utility of the two SPAI subscales and identified a number of dimensions contained within the social phobia subscale which differed depending upon the specific subject sample. In addition, the complaints of social phobies appeared more homogeneous than those of an agoraphobic comparison group. The results are discussed in terms of construct validity and the sensitivity of the SPAI to various dimensions of social phobia fears.This study was supported in part by NIMH Grants 41852, 30915, 18269, and 16884. 相似文献
43.
Melinda Wolbransky J.D. Ph.D. Naomi E. S. Goldstein Ph.D. Christy Giallella M.S. Kirk Heilbrun Ph.D. 《Behavioral sciences & the law》2013,31(4):457-476
Researchers must provide participants with opportunities to make informed decisions about whether to participate in research studies. Investigators conducting research with youth in the juvenile justice system face unique ethical, legal, and practical challenges to obtaining informed consent. Juvenile justice researchers must navigate multiple legal and ethical standards for collecting informed consent, take into account youths’ dual vulnerabilities as children and prisoners, and overcome practical limitations to obtaining parental/guardian permission. Given the challenges and complexity of obtaining standard informed consent of youth in juvenile justice facilities, this paper provides suggestions for overcoming obstacles to recruiting these youth for research participation. It offers guidance for fostering the enrollment of juvenile justice youth in research studies using procedures that comply with ethical and legal standards for research with this dually vulnerable population. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
44.
The ability to both identify and explain others’ intentional acts is fundamental for successful social interaction. In two cross-sectional studies, we investigated 3- to 9-year-olds’ (n = 148) understanding of the folk concept of intentionality, using three types of intentionality measures. The relationship between this type of reasoning and false belief and interpretive mind understanding was also examined. Judgment of the appropriateness of an explanation was based on adult responses (n = 20). Overall, the results indicated that the ability to both identify and appropriately explain a range of intentional acts does not fully emerge until 7 years of age or later. The pattern of explanations revealed the gradual development of a folk concept of intentionality. Preschool- and early school-age children focused on the protagonists’ desires and actions, whereas 8- and 9-year-olds and adults were more likely to reference the protagonists’ awareness and skills. 相似文献
45.
Patrick J. RottinghausLori D. Lindley Melinda A. GreenFred H. Borgen 《Journal of Vocational Behavior》2002,61(1):1-19
In a sample of 365 college students, the authors examined the incremental role of personality, self-efficacy, and interests in explaining level of educational aspirations. Measures were the Adjective Check List (ACL) (Gough & Heilbrun, 1983), the Skills Confidence Inventory (Betz, Borgen, & Harmon, 1996), and the six General Occupational Themes (GOTs) of the Strong Interest Inventory (Harmon, Hansen, Borgen, & Hammer, 1994). The Big Five personality dimensions were estimated from the ACL using John's (1990) method. The authors predicted that each of these domains would make independent contributions to explaining level of educational aspirations (1= bachelor's, 2= master's, and 3= doctorate). Sequentially, following Lent, Brown, and Hackett's (1994) social cognitive career theory, blocks of the Big Five, six General Conference Themes, and six GOTs were entered into a hierarchical regression predicting educational level. With the addition of each block, R2 rose from .10, to .26, to .29 for the total sample; similar incremental predictions were obtained separately for women (.13, .29, and .32) and men (.13, .30, and .37). 相似文献
46.
Psychometric properties of the Miranda Rights Comprehension Instruments with a juvenile justice sample 总被引:1,自引:0,他引:1
This article describes the psychometric properties of the Miranda Rights Comprehension Instruments, the revised version of Grisso's Miranda instruments. The original instruments demonstrated good reliability and validity in a normative sample. The revised instruments updated the content of the original instruments and were administered to a sample of 183 youth in pre- and postadjudication facilities. Analyses were conducted to establish the psychometric properties of the revised instruments and included similar analyses to those conducted by Grisso, as well as additional calculations (e.g., standard errors of measurement, intraclass correlation coefficients, Kappa coefficients). Results revealed sound psychometric properties, similar to those observed for the original instruments. 相似文献
47.
The psychosocial impact of Hurricane Katrina: contextual differences in psychological symptoms, social support, and discrimination 总被引:2,自引:0,他引:2
Weems CF Watts SE Marsee MA Taylor LK Costa NM Cannon MF Carrion VG Pina AA 《Behaviour research and therapy》2007,45(10):2295-2306
This study tested a contextual model of disaster reaction by examining regional differences in the psychosocial impact of Hurricane Katrina. A total of 386 individuals participated in this study. All were recruited in the primary areas affected by Hurricane Katrina and included residents of metropolitan New Orleans (Orleans Parish, Louisiana), Greater New Orleans (i.e., Metairie, Kenner, Gretna), and the Mississippi Gulf Coast (i.e., cities along the coast from Waveland to Ocean Springs, Mississippi). Participants were assessed for posttraumatic stress disorder (PTSD) symptoms, other psychological symptoms, perceptions of discrimination, perceptions of social support, evacuation distance, and the extent to which they experienced hurricane-related stressful events. Results were consistent with previous research on the impact of disasters on mental health symptoms. Findings extended research on individual differences in the response to trauma and indicated that regional context predicted unique variance in the experience of discrimination, social support, and emotional symptoms consistent with the theoretical model presented. 相似文献
48.
49.
John M. Ferron Bethany A. Bell Melinda R. Hess Gianna Rendina-Gobioff Susan T. Hibbard 《Behavior research methods》2009,41(2):372-384
Multiple-baseline studies are prevalent in behavioral research, but questions remain about how to best analyze the resulting
data. Monte Carlo methods were used to examine the utility of multilevel models for multiplebaseline data under conditions
that varied in the number of participants, number of repeated observations per participant, variance in baseline levels, variance
in treatment effects, and amount of autocorrelation in the Level 1 errors. Interval estimates of the average treatment effect
were examined for two specifications of the Level 1 error structure (σ2
I and first-order autoregressive) and for five different methods of estimating the degrees of freedom (containment, residual,
between—within, Satterthwaite, and Kenward—Roger). When the Satterthwaite or Kenward—Roger method was used and an autoregressive
Level 1 error structure was specified, the interval estimates of the average treatment effect were relatively accurate. Conversely,
the interval estimates of the treatment effect variance were inaccurate, and the corresponding point estimates were biased. 相似文献
50.
H. Russell Searight Ph.D. Mary Graham M.S. Lynn Rae M.S.W. A.C.S.W. Melinda Parker M.A. 《Journal of Contemporary Psychotherapy》1989,19(2):109-116
There is increased evidence that infants who receive poor quality social stimulation from their primary caregiver are at risk for later developmental difficulties. This paper describes a preventive intervention for mother-infant dyads exhibiting impaired patterns of social interaction. An impaired relationship with the primary caregiver has been found to be associated with social and emotional deficits in early childhood as well as with significant psychopathology in adulthood. The intervention consisted of group treatment of mothers and their infants. Each group session has 4 subsections which, together, were directed towards improving the mothers' ability to relate in a stimulating and nurturant manner to their children. Types of intervention included didactic instruction, modeling, and interpretation of the infant's behavior. Qualitative data suggested that the group intervention has positive effects on the mother-infant dyads. 相似文献