Twenty-two participants (11 male; 11 female) with a diagnosis
of schizophrenia were randomly assigned to either the CT
(n ¼ 10) or TAU (n ¼ 12) group and completed all tasks and
questionnaires required of their condition. These groups
showed no significant differences in intelligence, age, years
of education and psychiatric symptoms (including negative
symptoms) at baseline assessment (table 1). When analysing
performance on the CANTAB PAL, we focused on the eightpattern
stage, the highest level of task difficulty (table 2). At
outcome assessment, the CT group made significantly fewer
errors and needed significantly fewer attempts to remember
the location of different patterns (trial score) relative to the
TAU group. The CT group also correctly located more patterns
at the first attempt of the eight-pattern stage at outcome
assessment