3.1.1. Participants
To obtain small–medium power (effect size f 2 =
.05 in a linear multiple regression analysis), a
G∗Power analysis suggested a total sample size of 159
participants was needed to obtain a power of .80 (Faul, Erdfelder,
Buchner, & Lang, 2009). However, because we did not know the “true
effect,” we oversampled in Study 1. Therefore, we recruited 360
participants in Wuhan, China, in 2016. Wuhan is downstream of the
Yangtze River; thus, it is often threatened by flood risk during the
June-to-September monsoon season (Liu, Wang, & Li, 2014). Thirty
invalid questionnaires were excluded for random responding (i.e., giving
the same answer to all items or reporting an age > 100
years). Thus, the data from 330 participants were analyzed (222 women,
107 men, 1 did not report sex; M age = 23.26 ±
6.25 years).