Analyzed in a Group(2) × Stimulus(4) × Condition(2) mixed linear model (where “Stimulus” comprises baseline, and AO, ApCO, and NApO odor/picture presentation during stimulus familiarization), there was a small significant main effect for Stimulus on positive mood (F= 4.23, p < 0.05), but no interaction with Group or Condition. Paired differences between mood after AO exposure (4.48, SD= 1.11) and the remaining conditions (NApO= 4.35, SD= 1.06; ApCO= 4.36, SD= 1.08; Baseline= 4.33, SD= 0.95; p’s < 0.05) were nevertheless small in absolute magnitude. There were no significant main effects or interactions on negative mood (grand mean 1.25, SD = 0.49).
