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81.
Some factors involved in the comparison of response systems: acquisition, extinction, and transfer of head-poke and lever-press Sidman avoidance 下载免费PDF全文
John J. B. Ayres James O. Benedict Richard Glackenmeyer William Matthews 《Journal of the experimental analysis of behavior》1974,22(2):371-379
Head poking, a suggested natural escape reaction to shock for the rat, was compared to lever pressing in a Sidman avoidance study. Both responses could be emitted at any time, but only one was effective in a given session. Acquisition and extinction of the two responses were compared under both signalled and unsignalled avoidance. Then, a test for transfer was conducted in which acquisition conditions were re-instated, but the effectiveness of the responses was reversed. Three differences between responses were noted: (a) head poking was superior in reducing shock rates under signalled conditions; (b) head poking was more resistant to extinction, especially under signalled conditions; (c) under unsignalled conditions, animals were unable to learn to head poke if they had previously learned to lever press. Findings a and c were pursued in later experiments. Finding a depended on the location of the warning signal with respect to the response system. When the lever press required approach to the warning signal, the head poke was superior. But when the head poke required approach to the warning signal, the two responses were equally effective. Finding c depended on the absence of feedback for head poke during transfer. Two conclusions are offered: first, the two responses appear to obey the same laws when their topographical differences are taken into account. Second, response feedback appears to be more critical in transfer than in original acquisition. 相似文献
82.
Lucy Jane Allbaugh Margaret O'Dougherty Wright Susan F. Folger 《Anxiety, stress, and coping》2016,29(1):21-37
Background and Objectives: Repetitive thought (RT) strategies have been linked to a range of negative outcomes following traumatic interpersonal events but are proposed to serve an adaptive function under particular circumstances. This study examined outcomes following RT within a transdiagnostic framework, and explored the potentially adaptive nature of trait-like and event-related RT. Design: The centrality of a traumatic event to one's identity was explored as a context under which the adaptive nature of RT might change. Young adults with interpersonal violence experiences (N = 163) reported use of trait-like and event-related RT, centrality of the event, depressive, anxious, and posttraumatic stress symptoms (PTSS), posttraumatic depreciation and posttraumatic growth. Methods: Hierarchical multiple regression analyses were used to examine main and moderating effects of four types of RT and event centrality on outcome variables. Results: Centrality positively predicted depressive symptoms and PTSS, depreciation, and growth. Brooding RT positively predicted all negative outcomes. Reflecting RT positively predicted anxious symptoms and PTSS and depreciation. Only deliberate RT positively predicted growth. Centrality did not moderate any examined relationships. Conclusions: Findings highlight the importance of addressing specific types of RT in interventions with survivors and of considering centrality as a robust contributor to outcomes following interpersonal violence. 相似文献
83.
Louise Jupe Lucy Akehurst Zarah Vernham James Allen 《Applied cognitive psychology》2016,30(3):401-408
This study investigated the deception detection abilities of teenage offenders and teenage non‐offenders who made veracity judgments about 12 videotaped interviewees and also explored the behavioural characteristics of teenage liars and truth tellers. The findings revealed that teenage offenders were significantly more accurate in their credibility judgments than teenage non‐offenders. However, the offenders' impressive accuracy rates were not as a consequence of using valid cues to deceit. The feedback hypothesis helps to explain why the offenders were more accurate in their decisions: Operating within a criminal environment may mean that teenage offenders frequently lie and are lied to. Consequently, they receive more feedback than non‐offenders regarding the effectiveness of their lies as well as how successful they are at detecting lies. As a result, their lie detection ability improves. The current study suggests moving away from individual deceptive cues as predictors of deceit towards a more intuitive and holistic approach to lie detection, such as the Brunswikian Lens Model.Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
84.
Exploring Divergent Patterns in Racial Identity Profiles Between Caribbean Black American and African American Adolescents: The Links to Perceived Discrimination and Psychological Concerns 下载免费PDF全文
Delida Sanchez Keisha L. Bentley‐Edwards J. S. Matthews Teresa Granillo 《Journal of multicultural counseling and development》2016,44(4):285-304
Using cluster analyses, this study explored the relations among racial identity, perceived discrimination, and psychological concerns among 189 Caribbean Black American and African American adolescents. Findings showed that for all participants, less mature racial identity profiles were significantly related to perceived discrimination and psychological concerns. However, nuances in racial identity profiles between Caribbean Black American and African American participants suggest subtle ethnic group differences in racial identity development. Implications for practitioners and research are discussed. Usando análisis cluster, este estudio exploró las relaciones entre identidad racial, discriminación percibida y preocupaciones psicológicas en 189 adolescentes afroamericanos y americanos negros caribeños. Los hallazgos mostraron que, para todos los participantes, los perfiles de identidad racial menos maduros estaban significativamente relacionados con una discriminación percibida y preocupaciones psicológicas. Sin embargo, los matices de los perfiles de identidad racial entre los participantes afroamericanos y americanos negros caribeños sugieren unas diferencias sutiles entre ambos grupos étnicos en el desarrollo de la identidad racial. Se discuten las implicaciones para practicantes e investigadores. 相似文献
85.
Tom Booth Aja Louise Murray Mathilde Overduin Madelynn Matthews Adrian Furnham 《Journal of business and psychology》2016,31(2):205-216
Purpose
Identifying the characteristics of chief executive officers (CEOs) has been a longstanding goal in leadership and individual differences research. The purpose of this exploratory study was to consider which individual difference and career path variables differentiate CEOs from other senior managers.Design/Methodology/Approach
Participants (N = 1152) were UK-based senior managers (n = 1040) and CEOs (n = 112) who completed a self-report measure of the Five Factor Model of personality (NEO-PI-R), a measure of cognitive ability (graduate and management aptitude test), and answered a number of additional questions on their career paths as part of development centres. Analyses comprised inter-individual mean difference tests, intra-individual external profile analysis and logistic regression.Findings
Results indicated that personality facets of impulsiveness, vulnerability, activity and dutifulness showed the largest mean differences. No significant effects were found for the criterion profile pattern, but significant effects were found for profile level. Of the additional predictors, career path variables were the strongest predictors of CEO status.Implications
The combination of significant effects across domains of individual differences and career path variables emphasizes the importance of a multivariate approach in the study of leadership, top management teams and career progression.Originality/Value
The current study combines personality, cognitive ability, demographic and career path variables, and applies intra-individual methodologies to explore the characteristics of the very top level of organisational hierarchy.86.
Lucy G. Cheke Jon S. Simons Nicola S. Clayton 《Quarterly journal of experimental psychology (2006)》2016,69(11):2305-2316
Obesity has become an international health crisis. There is accumulating evidence that excess bodyweight is associated with changes to the structure and function of the brain and with a number of cognitive deficits. In particular, research suggests that obesity is associated with hippocampal and frontal lobe dysfunction, which would be predicted to impact memory. However, evidence for such memory impairment is currently limited. We hypothesised that higher body mass index (BMI) would be associated with reduced performance on a test of episodic memory that assesses not only content, but also context and feature integration. A total of 50 participants aged 18–35 years, with BMIs ranging from 18 to 51, were tested on a novel what–where–when style episodic memory test: the “Treasure-Hunt Task”. This test requires recollection of object, location, and temporal order information within the same paradigm, as well as testing the ability to integrate these features into a single event recollection. Higher BMI was associated with significantly lower performance on the what–where–when (WWW) memory task and all individual elements: object identification, location memory, and temporal order memory. After controlling for age, sex, and years in education, the effect of BMI on the individual what, where, and when tasks remained, while the WWW dropped below significance. This finding of episodic memory deficits in obesity is of concern given the emerging evidence for a role for episodic cognition in appetite regulation. 相似文献
87.
Lucy Campbell 《Canadian journal of philosophy》2019,49(2):230-252
A widespread view in the philosophy of mind and action holds that intentions are propositional attitudes. Call this view ‘Propositionalism about Intention’. The key alternative holds that intentions have acts, or do-ables, as their contents. Propositionalism is typically accepted by default, rather than argued for in any detail. By appealing to a key metaphysical constraint on any account of intention, I argue that on the contrary, it is the Do-ables View which deserves the status of the default position, and Propositionalism which bears the burden of proof. I go on to show that this burden has not been met in the literature. 相似文献
88.
Jenny Retzler Samantha Johnson Madeleine Groom Chris Hollis Helen Budge Lucy Cragg 《Child neuropsychology》2019,25(5):617-635
Inattention is one of the most common neurobehavioral problems following very preterm birth. Attention problems can persist into adulthood and are associated with negative socio-emotional and educational outcomes. This study aimed to determine whether the cognitive processes associated with inattention differ between term-born and very preterm children. Sixty-five children born very preterm (<33+0 weeks’ gestation) aged 8–11 years were recruited alongside 48 term-born controls (?37 20 +0 weeks’ gestation). Both groups included children with a wide spectrum of parent-rated inattention (above average attention to severe inattention) measured as a continuous dimension using the Strengths and Weaknesses of ADHD and Normal-Behavior (SWAN) scale. The children completed tests to assess basic cognitive processes and executive function. A hierarchical multiple regression analysis was implemented to assess which neurocognitive processes explained variance in parent-rated inattention and whether these differed between preterm and term-born children. In both groups, poorer verbal and visuospatial short-term memory and poorer visuospatial working memory independently explained variance in parent-rated inattention. Slower motor processing speed explained variance in inattention among very preterm children only. The cognitive mechanisms associated with parent-rated inattention were predominantly overlapping between groups, but relationships between motor processing speed and inattention were unique to very preterm children. These associations may reflect risk factors for inattention in term and very preterm children. Future research should assess the efficacy of these cognitive processes as potential targets for intervention 相似文献
89.
Kathryn L. Humphreys Lucy S. King Matthew D. Sacchet M. Catalina Camacho Natalie L. Colich Sarah J. Ordaz Tiffany C. Ho Ian H. Gotlib 《Developmental science》2019,22(3)
Exposure to stress has been causally linked to changes in hippocampal volume (HV). Given that the hippocampus undergoes rapid changes in the first years of life, stressful experiences during this period may be particularly important in understanding individual differences in the development of the hippocampus. One hundred seventy‐eight early adolescents (ages 9–13 years; 43% male) were interviewed regarding exposure to and age of onset of experiences of stress; the severity of each stressful event was rated by an objective panel. All participants underwent structural magnetic resonance imaging, from which HVs were automatically segmented. Without considering the age of onset for stressful experiences, there was a small but statistically significant negative association of stress severity with bilateral HV. When considering the age of onset, there was a moderate and significant negative association between stress severity during early childhood (through 5 years of age) and HV; there was no association between stress severity during later childhood (age 6 years and older) and HV. We provide evidence of a sensitive period through 5 years of age for the effects of life stress on HV in adolescence. It will be important in future research to elucidate how reduced HV stemming from early life stress may contribute to stress‐related health outcomes. 相似文献
90.
Ka I Ip Lucy Shih‐Ju Hsu Maria M. Arredondo Twila Tardif Ioulia Kovelman 《Developmental science》2017,20(5)
Can bilingual exposure impact children's neural circuitry for learning to read? To answer this question, we investigated the brain bases of morphological awareness, one of the key spoken language abilities for learning to read in English and Chinese. Bilingual Chinese‐English and monolingual English children (N = 22, ages 7–12) completed morphological tasks that best characterize each of their languages: compound morphology in Chinese (e.g. basket + ball = basketball) and derivational morphology in English (e.g. re + do = redo). In contrast to monolinguals, bilinguals showed greater activation in the left middle temporal region, suggesting that bilingual exposure to Chinese impacts the functionality of brain regions supporting semantic abilities. Similar to monolinguals, bilinguals showed greater activation in the left inferior frontal region [BA 45] in English than Chinese, suggesting that young bilinguals form language‐specific neural representations. The findings offer new insights to inform bilingual and cross‐linguistic models of language and literacy acquisition. 相似文献