Table 1.

Demographic, neuropsychological, and personality characteristics of the subjects participating in Experiments 1 and 2

OXT groupPLC group
Singles (n = 14)Relationship (n = 14)Singles (n = 13)Relationship (n = 16)
Age (years)23.50 (2.62)26.57 (2.85)25.31 (2.59)25.38 (4.06)
Years of education17.15 (2.27)19.29 (3.24)17.19 (2.51)17.54 (2.11)
RAVLT
    Trial 1-5a62.38 (5.27)60.07 (7.19)60.77 (7.03)65.13 (6.40)
    Trial 6: Retentionb14.31 (1.18)13.64 (1.55)13.77 (3.06)13.87 (1.41)
    Trial 7: Delayed recallc14.77 (0.44)13.86 (1.17)13.69 (3.30)13.93 (1.44)
LPS-4d32.46 (3.13)32.36 (3.27)31.00 (4.49)31.80 (3.93)
MWT-Ae30.57 (2.34)31.93 (2.02)30.54 (3.41)31.87 (2.72)
d2f205.14 (40.13)195.55 (28.41)183.69 (38.38)202.13 (29.25)
TMT-Ag (seconds)26.62 (6.78)26.50 (9.66)21.89 (4.43)25.03 (6.29)
TMT-Bg (seconds)59.14 (19.51)55.07 (16.81)64.78 (19.25)56.52 (21.64)
Digit-span, forwardh8.79 (2.19)9.21 (1.85)9.46 (1.85)9.06 (2.38)
Digit-span, backwardsh8.15 (2.48)9.13 (2.42)9.07 (2.16)9.29 (2.13)
STAI State, prei40.50 (2.90)41.07 (2.92)40.88 (3.50)40.85 (3.11)
STAI State, posti40.00 (2.66)41.57 (3.86)41.92 (3.97)40.06 (2.84)
STAI Traiti43.86 (4.72)42.67 (1.30)42.33 (4.50)43.64 (4.48)
Positive affect, prej27.00 (5.39)28.14 (5.36)30.54 (6.28)29.94 (5.50)
Positive affect, postj26.64 (6.13)27.79 (6.41)29.54 (5.32)28.69 (5.49)
Negative affect, prej11.00 (0.78)11.57 (2.28)12.23 (3.44)10.63 (1.02)
Negative affect, postj10.86 (1.29)11.29 (1.86)10.63 (1.26)11.15 (1.63)
SIASk14.29 (7.53)15.43 (8.24)13.00 (6.95)11.94 (5.27)
SPSl4.57 (3.90)5.33 (5.00)4.38 (3.36)4.07 (3.34)
BISm2.07 (0.42)2.18 (0.41)2.16 (0.52)2.37 (0.56)
BASn2.92 (0.43)3.02 (0.32)3.17 (0.49)3.15 (0.45)
  • 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).