## Variables ## - Independent variables: temperature and motivation manipulation - Mediator: need for affiliation - Dependent variables: attractiveness house, quality house, and communality house The outside temperature of each day collecting data will be noted (we will explore this as potentially moderating variable). ---------- ## Procedure Study 1 ## - Control condition (inside): participants were approached inside a shopping mall and were asked to fill in a short questionnaire for a consumer test about a house. - Outside condition / staying outside: participants were approached outside a shopping mall and were asked to fill in a short questionnaire for a consumer test about a house. - Outside condition / going inside: participants were approached outside a shopping mall and were asked to fill in a short questionnaire for a consumer test about a house. Additionally, they were told that we would finish the test inside of the shopping mall. ---------- ## Power Analyses (conducted with G*Power) ## - We based the power analyses on the effect sizes from the original study of IJzerman (2013) - Independent samples t-test (two-tailed) - Effect size (Cohen’s d): 0.37567 - Power (β): 0.80 - Alpha (α): 0.05 - Allocation ratio N2/N1: 1 - We calculated a sample size of 226. We were planning to run an intermediate analysis after collecting 113 participants. After this, we decided to adjust the Analysis Plan and sample size. ---------- ## Questionnaires ## - Questionnaire need for affiliation - Questionnaire house