Fragile streak goals induce pressure responses and an inverted-U performance pattern

Psychological pressure is thought to relate to performance in an inverted-U pattern, yet evidence is mixed, possibly because manipulations rarely produce high pressure. We induced scalable pressure using a streak goal that resets after a failure in a force-control task. Participants pursued ten consecutive successes (streak goal) or 100 successes irrespective of sequence (total goal). Under the streak goal, heart rate, pupil size, and perceived pressure rose as participants approached their maximum streak; under the total goal, heart rate and pupil size showed little modulation. Performance followed an inverted-U under the streak goal--improving then declining at the maximum streak--whereas the total goal showed no late-stage drop. This dissociation suggests the late-stage decline reflects pressure, not the streak itself. Despite this clear performance decrement, analyses of movement vigor, feedforward/feedback kinematics, and individual differences in pressure responses revealed no consistent systematic signatures at the group level. Fragile streak goals thus provide a multimodal pressure manipulation and a platform for testing mechanisms underlying choking in human motor control.