Table 1.

Participants’ demographic information

N=223				Decile
	1	2	3	4	5	6	7
Age range [years]	19-27	28-37	38-47	48-57	58-67	68-77	78-87
Numbers	21	39	37	35	35	30	26
Gender
Male	9	19	18	17	18	16	14
Female	12	20	19	18	17	14	12
Handedness^a
Mean/SD	79/44	89/25	81/27	94/11	77/50	95/10	87/33
Range[min/max]	-100/100	-56/100	-56/100	58/100	-78/100	53/100	-56/100
Education^b
None	0	0	0	0	0	5	1
GCSE	2	2	6	3	3	3	3
A-level	4	1	3	11	9	8	9
University	15	36	28	21	23	14	13

Higher scores indicate greater right-hand preference, as assessed by Edinburgh Handedness Inventory (Oldfield, 1971).

Educational attainment categorized according to the British education system: “None” = no education over the age of 16 yrs; “GCSE” = General Certificate of Secondary Education; “A Levels” = General Certificate of Education Advanced Level; “University” = undergraduate or graduate degree.