Oxytocin Modulates Social Distance between Males and Females

There were neither main nor interaction effects of treatment and relationship status (all ps > 0.05) for any of the parameters listed in this table. Verbal declarative memory performance was assessed using a German adaption of the RAVLT (Rey Auditory Verbal Learning Test) and included the following:

↵^alearning performance across five trials (maximum possible score 75),

↵^bsusceptibility to interference (maximum possible score 15), and

↵^cdelayed recall (maximum possible score 15). Nonverbal reasoning IQ was assessed by the

↵^dLPS (Leistungsprüfsystem) subtest 4 (maximum possible score 40). Verbal IQ based on lexical decisions was assessed by the

↵^eMWT-A (Mehrfachwahl-Wortschatz-Intelligenz-Test Teil A; maximum possible score 37), visual attention and concentration was assesses using the

↵^fd2 (Aufmerksamkeits- und Belastungstest d2), visual attention and task-switching was assessed using the

↵^gTMT-A and TMT-B (Trail-making test A and B), working memory performance was assessed using the

↵^hdigit-span forward and backward test (maximum possible score 14). Mood and anxiety were assessed before and after the experiment with the

↵ⁱSTAI (State Trait Anxiety Inventory) and the

↵^jPANAS (Positive and Negative Affective Schedule). Personality traits were measured with the

↵^kSIAS (Social Interaction Anxiety Scale), the

↵^lSPS (Social Phobia Scale), the

↵^mBIS (Behavioral Inhibition System), and the

↵ⁿBAS (Behavioral Approach System). Given are mean values (SD).