Table 2.

Behavioural measures

Hayling sentence completion task
	Word appropriateness Mean (s.d.)	Reaction time (ms) Mean (s.d.)
Low constraint	6.4 (0.97)	2526 (597)
Medium low constraint	3.3 (0.58)	2427 (621)
Medium high constraint	2.0 (0.37)	2300 (635)
High constraint	1.1 (0.09)	2309 (634)
Encoding/retrieval task
	Word classification Mean (s.d.)	Word retrieval Mean (s.d.)
Total number correct (out of 36 and 72 stimuli respectively)	35 (1.3)	53* (8.2)
Total number incorrect	0.3 (0.6)	14.2 (5.1)
Reaction time	1037 (440)	1308 (388)

* for correct recognition, total correct = 25 (5.0), for correct rejection, total correct = 28 (5.5)