Adolescent precursors of early union formation among Asian American and Whites

This study investigates the relatively low rates of early marriage and cohabitation among Asian Americans compared to Whites. With an emphasis on family value socialization and other precursors measured in adolescence, data from Waves 1 and 3 of Add Health are used to test five hypotheses. Analyses of early marriage indicate that the Asian-White difference is driven primarily by differences in adolescent sexual and romantic relationship experiences, and several measures of family values play a stronger role among Asian Americans than Whites. Asian-White differences in cohabitation persist net of SES and other adolescent precursors, but differences are attenuated when parental value socialization, intimate relationship experiences, and educational investments are controlled. These results are interpreted within a culturally sensitive conceptual framework that emphasizes independent versus interdependent construals of the self.America

Teen overweight, weight stigma, and intimate relationship development from adolescence to young adulthood

With an emphasis on how weight stigma is manifested in social relationship context, this study explores two under-studied consequences of adolescent overweight, timing of first sex and subsequent intimate relationship development. The data employed come from Waves I to III of the National Longitudinal Study of Adolescent Health. The results indicate that overweight adolescents have significantly later onset of first sex and are more likely to enter early adulthood without any intimate relationship experience when compared to normal-weight youth. Overweight adolescents are vulnerable to discriminatory treatments such as being rejected by or having less close relationships with peers and are thus less likely to have any intimate relationship. The study contributes to the existing literature on overweight youth by revealing the critical role of prejudiced social encounters in peer relationships as the key context that hinders the development of intimate relationships from adolescence to early adulthood. Future studies should seek to understand the broader implications of poor social adjustments during adolescence for later development.

Randomized controlled trial of a home-based action observation intervention to improve walking in Parkinson disease

Published in final edited form as: Arch Phys Med Rehabil. 2016 May ; 97(5): 665–673. doi:10.1016/j.apmr.2015.12.029.OBJECTIVE: To examine the feasibility and efficacy of a home-based gait observation intervention for improving walking in Parkinson disease (PD). DESIGN: Participants were randomly assigned to an intervention or control condition. A baseline walking assessment, a training period at home, and a posttraining assessment were conducted. SETTING: The laboratory and participants' home and community environments. PARTICIPANTS: Nondemented individuals with PD (N=23) experiencing walking difficulty. INTERVENTION: In the gait observation (intervention) condition, participants viewed videos of healthy and parkinsonian gait. In the landscape observation (control) condition, participants viewed videos of moving water. These tasks were completed daily for 8 days. MAIN OUTCOME MEASURES: Spatiotemporal walking variables were assessed using accelerometers in the laboratory (baseline and posttraining assessments) and continuously at home during the training period. Variables included daily activity, walking speed, stride length, stride frequency, leg swing time, and gait asymmetry. Questionnaires including the 39-item Parkinson Disease Questionnaire (PDQ-39) were administered to determine self-reported change in walking, as well as feasibility. RESULTS: At posttraining assessment, only the gait observation group reported significantly improved mobility (PDQ-39). No improvements were seen in accelerometer-derived walking data. Participants found the at-home training tasks and accelerometer feasible to use. CONCLUSIONS: Participants found procedures feasible and reported improved mobility, suggesting that observational training holds promise in the rehabilitation of walking in PD. Observational training alone, however, may not be sufficient to enhance walking in PD. A more challenging and adaptive task, and the use of explicit perceptual learning and practice of actions, may be required to effect change

Pleasure reading behavior and attitude of non-academic ESL students: A replication study

The present study replicated the methods and data analysis of Crawford Camiciottoli’s (2001) study on second language (L2) reading behavior of academic English-as-a-foreign-language students. Using the original study’s questionnaire, we investigated 60 advanced non-academic English-as-a-second language learners’ L2 reading frequency and attitude. Descriptive statistics and multiple regressions were applied for the analysis. Our study revealed differentiated findings, while partially confirming Crawford Camiciottoli’s results. In contrast to the original study, we found that the participants with positive attitudes towards reading tend to read more and that experience in the target-language culture and years of previous English study did not show statistically significant results on the participants’ reading habits and attitudes. On the other hand and in line with the original study, first language (L1) reading correlated with L2 reading habits, and lack of time was the most selected reasons for poor reading habits

Repeated-reading-based instructional strategy and vocabulary acquisition: A case study of a heritage speaker of Chinese

Repeated reading, a procedure involving repetition of the same text, has received copious attention from first language reading research providing highly converging evidence of its potency for reading fluency, accuracy, and comprehension. In contrast, second language research on repeated reading has been scarce. The very few studies extant have, nevertheless, shown similar, albeit inconclusive, findings. The present study was an attempt to foray into a hitherto uncharted area in both first and second language research, by investigating vocabulary gains from implementing a set of repeated-reading-based pedagogical and learning procedures. Using one heritage speaker of Chinese as its subject, the study administered 20 sessions of assisted repeated reading over three weeks. Results indicated both intentional and incidental vocabulary gains that would not otherwise have been possible through conventional reading or vocabulary instruction

Effects of Parkinson’s disease on optic flow perception for heading direction during navigation

Visuoperceptual disorders have been identified in individuals with Parkinson’s disease (PD) and may affect the perception of optic flow for heading direction during navigation. Studies in healthy subjects have confirmed that heading direction can be determined by equalizing the optic flow speed (OS) between visual fields. The present study investigated the effects of PD on the use of optic flow for heading direction, walking parameters, and interlimb coordination during navigation, examining the contributions of OS and spatial frequency (dot density). Twelve individuals with PD without dementia, 18 age-matched normal control adults (NC), and 23 young control adults (YC) walked through a virtual hallway at about 0.8 m/s. The hallway was created by random dots on side walls. Three levels of OS (0.8, 1.2, and 1.8 m/s) and dot density (1, 2, and 3 dots/m2) were presented on one wall while on the other wall, OS and dot density were fixed at 0.8 m/s and 3 dots/m2, respectively. Three-dimensional kinematic data were collected, and lateral drift, walking speed, stride frequency and length, and frequency, and phase relations between arms and legs were calculated. A significant linear effect was observed on lateral drift to the wall with lower OS for YC and NC, but not for PD. Compared to YC and NC, PD veered more to the left under OS and dot density conditions. The results suggest that healthy adults perceive optic flow for heading direction. Heading direction in PD may be more affected by the asymmetry of dopamine levels between the hemispheres and by motor lateralization as indexed by handedness.Published versio