BACKGROUND Psychosocial factors have been related to physical activity (PA) and are used to evaluate mediation in PA interventions. METHODS Brief theory-based psychosocial scales were compiled from existing measures and evaluated. Study 1 assessed factor structure and construct validity with self-reported PA and accelerometry in overweight/obese men (N = 441) and women (N = 401). Study 2 asse...

The study of pro-environmental behavior has been dominated by self-report scales and field observations. Although both approaches have their merits, they also suffer from critical limitations that obstruct progress towards a better understanding behavior. Pro-Environmental Behavior Task (PEBT) was developed to address these facilitating the actual under controlled laboratory conditions. In pres...