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31.
Repetitive auditory stimulation (with click trains) and visual velocity signals both have intriguing effects on the subjective passage of time. Previous studies have established that prior presentation of auditory clicks increases the subjective duration of subsequent sensory input, and that faster moving stimuli are also judged to have been presented for longer (the time dilation effect). However, the effect of clicks on velocity estimation is unknown, and the nature of the time dilation effect remains ambiguous. Here were present a series of five experiments to explore these phenomena in more detail. Participants viewed a rightward moving grating which traveled at velocities ranging from 5 to 15°/s and which lasted for durations of 500 to 1500 ms. Gratings were preceded by clicks, silence or white noise. It was found that both clicks and higher velocities increased subjective duration. It was also found that the time dilation effect was a constant proportion of stimulus duration. This implies that faster velocity increases the rate of the pacemaker component of the internal clock. Conversely, clicks increased subjective velocity, but the magnitude of this effect was not proportional to actual velocity. Through considerations of these results, we conclude that clicks independently affect velocity and duration representations. 相似文献
32.
Paul Hammerness Ronna Fried Carter Petty Benjamin Meller Joseph Biederman 《Child neuropsychology》2013,19(3):319-327
Aim: To psychometrically assess cognitive domains in adolescents with ADHD during long-term open treatment with robust dosing of extended-release methylphenidate (OROS MPH).Methods: Data were derived from a prospective clinical study of adolescent ADHD, employing the Cambridge Neuropsychological Test Automated Battery (CANTAB), before and after up to one year of treatment with OROS MPH. In the absence of placebo control, a similar age and gender group of youth without ADHD served as comparators.Results: During the course of treatment with OROS MPH, ADHD youth’s performance significantly improved across multiple CANTAB tasks, including spatial working memory, rapid visual processing, verbal recognition memory, set shifting, and inhibition/vigilance. ADHD subjects’ scores in several CANTAB tasks, including spatial working memory, planning, and set shifting, were significantly more impaired at baseline compared to the non-ADHD comparison group; these significant differences were no longer seen at endpoint.Conclusions: Statistically significant improvements in multiple cognitive domains were observed in a sample of adolescents with ADHD over the course of 12 months of robust treatment with extended-release methylphenidate. Rigorous, monitored stimulant treatment may be associated with objectively determined cognitive benefits; however, practice effects in this open trial cannot be ruled out. Further study on this important topic is warranted. 相似文献
33.
Haley Moss Dillon Lora Elizabeth Adair Zhe Wang Zoe Johnson 《Personality and individual differences》2013
Life history theory explains how individuals decide to invest their limited resources, which involves several trade-offs. Particularly relevant to the current work, individuals can choose to invest in current or delayed reproduction (a slow life history strategy), which implicates a trade-off between the quantity and the quality of one’s offspring. Choosing to delay reproduction allows for increased self-investment, and previous research has demonstrated that traits requiring self-investment are related to higher mate value. As such, the current study hypothesizes that slow life history strategy will predict high personal mate value and high levels of partner mate-value within heterosexual partnerships. Similarly, those with a slow life history strategy should display fewer tendencies toward mate-settling. The current work employs both subjective and objective measures of mate value within mateships to investigate these hypothesized relationships. As hypothesized, significant positive relationships among life history and mate value were detected, suggesting that a slower life history strategy corresponds to high ratings of mate value for both self and partner. Also, life history strategy is a significant predictor of subjective, objective, and Mate Value Inventory ratings of partner and self. Further implications and potential future works are discussed. 相似文献
34.
The present article offers a commentary and critique of the research presented by J. Owen, M. M. Leach, B. Wampold and E. Rodolfa (2011). Given the complexity of the research methodology, findings, and conclusions, the authors provide a concise summary of findings, study limitations, and conclusions followed by a detailed critique of the study. The authors respect and appreciate the ambitious efforts made by Owen et al. to address gaps in the literature regarding outcome research using client ratings of counselors' multicultural counseling competencies (MCCs). The authors provide a critical analysis of some of J. Owen et al.'s specific conclusions and offer alternative conclusions based on conceptual and methodological bases. The authors use the opportunity to comment on this study as a means of advancing recommendations regarding future research on MCCs that might contribute to substantive revisions to the long-standing theoretical foundation in this area. 相似文献
35.
Classical conditioning is one of the most fundamental types of learning, yet demonstrating its principles in a classroom setting can be challenging. This study introduces using PowerPoint as a new, practical technique that can be used in a classroom setting to demonstrate classical conditioning. The PowerPoint file is flexible and easy to adapt for demonstrating various aspects of classical conditioning (including higher order conditioning) in a concrete manner. Moreover, this study was designed to measure salivation in a more objective and valid way which could be used by student researchers interested in measuring salivation as a conditioned response. 相似文献
36.
Using three waves of data (1998, 2000, 2002) on 1,325 emerging adults, we examined depressive symptoms and life satisfaction
among a diverse group of high school dropouts and graduates. Emerging adults who left school without graduating were significantly
more depressed and reported lower life satisfaction than graduates at the time of their expected graduation (T1), but these
differences were nonsignificant 4 years later (T3). Working within an ecological developmental framework (Bronfenbrenner 1977, 1986), we found that graduation status, household composition, family general and transition specific support, peer support, and
adolescent attachment styles protected against adverse mental health consequences at T1. However, only parent and peer support
and attachment predicted changes in depressive symptoms and life satisfaction from T1 to T3. 相似文献
37.
Michael S Robbins José Szapocznik Frank R Dillon Charles W Turner Victoria B Mitrani Daniel J Feaster 《Journal of family psychology》2008,22(1):51-61
Many family therapies for adolescent drug use include ecological interventions. The purpose of this randomized clinical trial was to establish whether ecological interventions contribute to the impact of family therapy above and beyond the contributions of family process-only interventions. A family-based ecological approach, structural ecosystems therapy (SET), was compared with family process-only condition (FAM) and community services control (CS). One hundred ninety substance-abusing or dependent African American and Hispanic adolescents were randomized to SET, FAM, or CS. Follow-up assessments were conducted at 3, 6, 12, and 18 months postrandomization. SET was significantly more efficacious than FAM and CS in reducing adolescent drug use. However, these improvements were limited to Hispanic adolescents. The study demonstrates the importance of investigating changes in adolescent drug use as a result of treatment condition across more than 1 racial/ethnic group. 相似文献
38.
39.
The media have been widely criticized for promoting unhealthy images of masculinity. To better understand how men are portrayed on television, we analyzed male characters' self-disclosures on television. From the 11 most highly rated situation comedies, 1,320 min of programming were examined, in which 328 incidents of self-disclosure were identified. Results indicated that male characters disclosed an average of once every 4.08 min (5.96 times per 24-min episode), disclosed more often to male than to female characters, and expressed negative emotions more frequently to male than to female characters. Male characters self-disclosed freely and comfortably, and they were moderately emotionally expressive and personally revealing. They typically received somewhat favorable responses from others to their disclosures. However, the demographic characteristics of the characters failed to represent the diversity of U.S. society. Potential implications for television and society are discussed, and directions for future research are suggested. 相似文献
40.