The authors have assessed perceptual motor tasks involving the learnin
g of the mouse control by locking at a Macintosh computer screen durin
g three consecutive sessions. Tests were performed by 102 control subj
ects aged between 16 and 85 years. Concerning age, there was a signifi
cant time difference (ANOVA) but improvement was the same for all subj
ects. Educational level and IQP results didn't influence procedural pe
rformance. Men were faster in three tasks. We can argue that implicit
learning abilities appear before explicite memory and within the adult
life span there appears to be little significant deterioration in imp
licit memory abilitie.