Measures Perceived Barriers to Walking for Physical Activity Scale Project MOBILE EMA items Self-Efficacy to Overcome Barrier to Walking for Transportation Scale USC AsthEMA Study EMA Items Mothers’ and Their Children’s Health (MATCH) Mother EMA Survey Mothers’ and Their Children’s Health (MATCH) Child EMA Survey Maternal and Development Risks from Environmental Stressors (MADRES) Mobile Healthy PLACES Child EMA Survey