OBJECTIVES To evaluate whether happiness can spread from person to person and whether niches of happiness form within social networks. DESIGN Longitudinal social network analysis. SETTING Framingham Heart Study social network. PARTICIPANTS 4739 individuals followed from 1983 to 2003. MAIN OUTCOME MEASURES Happiness measured with validated four item scale; broad array of attributes of so...

Background. Self-efficacy is a key theoretical construct that should be considered when aiming to improve the implementation of evidence-based practice (EBP) among occupational therapists (OTs). Current available tools measuring self-efficacy to implement the steps of EBP in the field of occupational therapy contain a limited number of EBP steps without strong evidence of reliability or validit...

abstract in order to evaluation the effects of price policies (wheat guarantee price in each period and its price lag), environmental (planted area) and climatic (min and max average temperature, total annual precipitation, cold-day degree and hot-day degree) factors, we considered wheat yield in razavi-khorasan province (9 cities) for a 13-year statistical period (1371-72 to 1383-84). in this ...