Table 1.

Pearson correlations between age and placement and removal measures.

Measurea	Age	Meanb RPc	IIVd RP	Mean LPe	IIV LP	Mean RRf	IIV RR	Mean LRg	IIV LR
Age	—h	—	—	—	—	—	—	—	—
Mean RP	−0.33i	—	—	—	—	—	—	—	—
IIV RP	−0.17	0.66j	—	—	—	—	—	—	—
Mean LP	−0.31	0.44j	−0.01	—	—	—	—	—	—
IIV LP	−0.38i	0.35i	0.20	0.46j	—	—	—	—	—
Mean RR	−0.18	0.57j	0.19	0.24	0.13	—	—	—	—
IIV RR	−0.19	0.29	−0.01	−0.05	−0.15	0.72j	—	—	—
Mean LR	−0.31	0.47j	0.14	0.36i	0.27	0.52j	0.36i	—	—
IIV LR	−0.40i	0.35i	0.15	0.13	0.21	0.25	0.40i	0.72j	—

^aAll tests are 2-tailed.

^bMean: mean value for each movement in an activity.

^cRP: right hand placement.

^dIIV: intraindividual variability (SD for the movements in an activity).

^eLP: left hand placement.

^fRR: right hand removal.

^gLR: left hand removal.

^hEmpty cells are meant to avoid repeated correlation values (the table is diagonally symmetric).

ⁱP<.05.

^jP<.01.