Relationship conflict. Conflict was measured with four items of Jehn’s Intragroup
Conflict Scale (1995). On a seven-point scale (1 ¼ never, 7 ¼ always), the participants
indicated how often each behaviour occurred in their team (e.g. “How often is there
friction among members in your team”). Conflict was measured in time 2. Exploratory
factor analysis revealed only one factor with 77.47 per cent of variance explained.
The four-item scale showed high reliability (a ¼ 0:90), which is consistent with previous
studies (e.g. Jehn, 1995; Jehn and Mannix, 2001).