The present study investigated the cognitive strategies subjects employ in response to positive self-statement (PSS) stimuli using a modification of Velten's (1968) mood induction procedure. Sixty subjects were assigned to one of three groups in which they received instructions to either rehearse (RI), visualise (VI), or employ one of either of these methods (RI/VI) in response to PSS stimuli. The results of this study revealed that, regardless of instructions to employ a particular cognitive strategy, the majority of subjects both self-talked and visually-imaged in response to the PSSs. Although subjects employed both cognitive methods, an interaction between the groups instructions and the nature of the PSS was also found. This was most evident for the groups instructed to self-talk, who responded to the first PSS by maintaining clarity for a significantly greater period of time. These results are discussed with regard to the importance of assessing cognitive activity and also their implications for Cognitive-Behaviour Therapists.