Reinforcement can reduce the size- latency phenomenon

Saccadic latencies are known to change as a function of target eccentricity. Recently, it has been shown that latencies may be evaluated in terms of the amplitude of the step in proportion to the size of the target, and consistently change according to this step-size ratio with smaller ratios producing longer latencies (Madelain et al., 2005; Harwood et al., 2008; De Vries et al., 2016). This effect, called the size-latency phenomenon, might be seen as a function of a cost-benefit relationship: the difference in latencies might be explained by the ‘cost’ of making a saccade while the target