Table 2.

Correlations between behavioural measures. Correlations between task performance computed using the efficiency scores (^* = 0.05; ^** = 0.01).

	Fluency task		Synonyms task
			Frequency		Imageability
	Category	Letter	High	Low	High	Low
Category fluency	1	0.354∗	0.154	0.308∗	0.199	0.328∗
Letter fluency		1	0.388	0.368∗	0.373∗	0.298
High frequency			1	0.471∗	0.598∗∗	0.483∗∗
Low frequency				1	0.604∗∗	0.876∗∗
High imageability					1	0.339∗
Low imageability						1