Word length was the same for primed and unprimed conditions and averaged 4.5 letters. Non-word length also averaged 4.5 letters and consisted of pronounceable combinations of letters. Both word and non-word stimuli were of 2.5 cm in height and were of white color presented over a black background. Word familiarity, using the scale of Toglia et al. (1978), for both the primed and unprimed words, averaged 6.3 on a scale of 1 (unfamiliar) to 7 (very familiar). A standardized spelling list (Forbes, 1968) placed the average grade level of the primed and unprimed words in the 3rd grade and ranged from 2nd to 7th grade. Imaginability of the words ranged from 215 to 641 on the scale of 100 to 700 with an average of 484.31. The average concreteness of the words was 447.36, with the range from 242 to 624. Both imaginability and concreteness scores were obtained online from the MRC Psycholinguistic Database (Refer http://www.psy.uwa.edu.au/mrcdatabase/mrc2.html). Written frequency, according to Kucera-Francis frequency count, averaged 456.80 and ranged from one to 21,341 (Kucera and Francis, 1967). The parts of speech of the words included noun, verb, adjective, adverb and preposition; some words fell into more than one category.
