“…This mechanism mediating the congruency advantage for first trials may relate to the within-list primacy effects found for categorized lists: In previous studies, lists containing blocks of items from the same category (e.g., flowers, animals, countries, etc.) reveal a memory advantage for the first item within each block, even if those items occurred in the middle of the list as a whole (e.g., Gorfein, Arbak, Phillips, & Squillace, 1976). This effect has been attributed to increased rehearsal of items from the same category, for which the category name becomes an implicit associative response: The later occurrence of an item cues its category name, which reactivates earlier items of the same category, improving their encoding (Underwood & Freund, 1969; Wood & Underwood, 1967).…”