# The Reward Experiment - “Why aren’t we always prepared?” - Is it a matter of motivation? - Reward bocks: flat(ter) preparation curves? - Reward blocks: more memory effects - [Cognition Hazard Rates](Cognition Hazard Rates.md) - Reward blocks: less memory effects - [Cognitive fMTP](Cognitive fMTP.md) -  - Fanning - smaller if reward - less effects of previous trial ## Findings - The effects of reward and brightness on preparation - Additive effects : neither affects the slope - even when motivated, preparation depends on FP - Stimulus visibility does not interact with preparation - Maybe not a visual attention process -  - Reward has more effects when targets are highly visible - Interaction : Reward * Brightness -  - Effects on accuracy - Reward blocks→ higher accuracy - High visibility → higher accuracy - More errors with longer foreperiod…. - …But only when rewarded/motivated - …And mainly when visibility low -  - Effects on memory from past trials - Past trial effects $fp \ast fp(n-1)$ - This effect (the fanning) is essentially constant across target visibility and reward - If anything: a little bit larger when there is no reward. -  - Effects on memory - Up to n-5 - When there is reward, there is slightly ‘faster forgetting’ - Faster forgetting when rewarded slightly -