Simple reaction time (SRT) in response to visual stimuli can be influenced by many stimulus features. The speed and accuracy with which observers respond to a visual stimulus may be improved by prior knowledge about the stimulus location. which can be obtained by manipulating the spatial probability of the stimulus. However. https://www.roneverhart.com/San-Diego-Padres-Indigo-Graphite-Collection-1998-World-Series-Fitted-Hat/