CentralReach Institute Complete Practice Exam 2026

Position bias in discrimination training shows up when the learner's responses are driven by where a stimulus appears (the side) rather than by the actual identity of the stimulus. In practice, this means the learner develops a stable preference for one location and responds there across different stimuli. Consistently choosing the left-side stimulus demonstrates this pattern: the left location controls the behavior, showing a lateral preference rather than responding based on the discriminative cue. Ignoring the left side would indicate no side bias, responding randomly suggests no consistent control by position, and consistently choosing the right side would be a different side bias rather than the leftward bias described here.