Table 2. Descriptive statistics of the primes.

Measure	Mean (SD)	Range
Length (number of syllables, calculated by eSpeak speech synthesiser for British pronunciations; http://espeak.sourceforge.net/)	1.43 (0.59)	1–3
Frequency per million words (SUBTLEX-UK, Van Heuven et al., 2014)	44.91(80.46)	0.39–489.02
Age of acquisition (Glasgow norms, Scott et al., 2019)	3.14 (0.85)	1.66-5.25
Familiarity (Glasgow norms, Scott et al., 2019)	5.64 (0.64)	4.18-6.71
Meaning dominance (proportion of word association responses consistent with the dominant meaning, based on Gilbert & Rodd, 2022)	0.78 (0.14)	0.51-0.99
Semantic similarity between primes and narrative (based on latent semantic analysis, http://lsa.colorado.edu/; ranging from −1 (low) to +1 (high) similarity in co-occurrence statistics)	0.06 (0.12)	−0.11-0.5