Fig. 2

The model-predicted difference in long-term memory z-score (y-axis) associated with reallocations of time towards or away from each time-use behaviour (displayed in the header of each panel), in 15-minute increments from the reference mean time-use composition. Purple lines represent participants with greater than the sample mean frontal lobe volume (‘Upper’); orange lines represent participants with less than the sample mean frontal lobe volume (‘Lower’). Shading represents 95% confidence intervals. Mean frontal lobe volume (corrected) in the ‘upper’ group = 174.8 ± 5.0, range = 168.3, 193.0. Mean frontal lobe volume (corrected) in the ‘lower’ group = 161.2 ± 5.0, range = 143.3, 168.3.