Previous experimental work shows that negation processing can be direct in bipolar contexts where positive/negative states of affairs can be expressed by available lexical opposites (remember/forget) in monolingual speakers. However, in a unipolar context where such opposites are not available (sing/not sing), the processing first proceeds through…

Prior work on retrieval-induced forgetting showed that retrieving a subset of formerly studied items can impair item recognition of related, nonretrieved material. Here it was investigated whether retrieval practice can also impair the items' recognition as a member of a studied category. Subjects studied preexperimentally unrelated words that…

Patients with semantic dementia show a specific pattern of impairment on both verbal and non-verbal "pre-semantic" tasks, e.g., reading aloud, past tense generation, spelling to dictation, lexical decision, object decision, colour decision and delayed picture copying. All seven tasks are characterised by poorer performance for items that are…