selection of favorite cultivars and lines affected with genotype- environment interaction dramatically. in order to study of genotype × environment interaction in rice, 12 lines with 2 commercial cultivars as check (neda and fajr) was studied in 9 different environments (3 location and 3 years). the experiment was randomized complete block design (rcbd) with three replications. the differences ...

BACKGROUND The use of computers has increased among adolescents, as have musculoskeletal symptoms. There is evidence that these symptoms can be reduced through an ergonomics approach and through education. The purpose of this study was to examine where adolescents had received ergonomic instructions related to computer use, and whether receiving these instructions was associated with a reduced ...

This 3-year, multi-informant study examined whether youths' perceptions of parental privacy invasion predicted lower parental knowledge over time, as a function of increased adolescent secrecy. Participants were 497 Dutch adolescents (Time 1 M = 13 years, SD = 0.5; 57% boys) and both parents. Higher youth-reported invasion predicted lower father- and mother-reported knowledge 1 year later. A li...

Measurements of neighborhood exposures likely vary depending on the definition of "neighborhood" selected. This study examined the extent to which neighborhood definition influences findings regarding spatial accessibility to tobacco retailers among youth. We defined spatial accessibility to tobacco retailers (i.e., tobacco retail density, closest tobacco retailer, and average distance to the c...

The present study examined psychological and psychopathological correlates of psychological inflexibility as measured by the Avoidance and Fusion Questionnaire for Youth (AFQ-Y) in two independent samples of nonclinical Dutch adolescents aged between 12 and 18 years (Ns being 184 and 157). Participants completed a survey containing the AFQ-Y and scales assessing mindfulness, thought suppression...

OBJECTIVES To describe youth access to indoor UV tanning and youth discount pricing incentives in 4 states with different age restrictions: Colorado (no age restrictions), Texas (age 13 years), Illinois (age 14 years), and Wisconsin (age 16 years). DESIGN Cross-sectional telephone survey conducted in October 2003 using a standardized script to assess the practices of randomly selected UV tann...

The purpose of the current study was to initiate the development of a psychometrically sound measure of cohesion for youth sport groups. A series of projects were undertaken in a four-phase research program. The initial phase was designed to garner an understanding of how youth sport group members perceived the concept of cohesion through focus groups (n = 56), open-ended questionnaires (n = 28...

Background: Tobacco use is a major cause of preventable death and disease in India. A nationally representative case-control study of smoking in India (2008) revealed that only 2% of smokers had spontaneously quit. This study was undertaken to assess tobacco quit rates among the youth in an urban health center and to determine barriers in quitting tobacco use. Methods: This cross sectional stud...