Fig. 3.

Relationships between Ospan and KΔ, the visuospatial working memory (VSWM) capacity decrement due to the presence of distractors, under placebo (a), and cabergoline (b). Ospan was not significantly correlated with KΔ under placebo, r(23) = .357, p = .080. Ospan was significantly negatively correlated with KΔ cabergoline, r(23) = −.502, p = .011. These correlations were significantly different from each other, Z = −2.657, p < .05, 95% CI for the difference (−1.608, −.243) (Meng et al., 1992). c Relationship between Ospan and KΔDD, the drug difference (cabergoline minus placebo) for the VSWM capacity decrement (KΔ) due to the presence of distractors. Scores below the zero point (negative KΔDD) indicate the participant was more impaired at filtering distractors under cabergoline versus placebo. KΔDD was significantly negatively correlated with Ospan, r(23) = −.543, p = .005