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Cognitive processes effecting Heart Rate: Testing Lacey's Intake-Reject Hypothesis Abstract: Lacey's (1967) Intake-Reject Hypothesis was tested using data from 88 male and female participants. Two variables, task difficulty and type of task were manipulated to measure participants' heart rate (in beats per minute). A 2x2 factorial Repeated Measures was performed on the data and the results were found to be in concordance with the theory Lacey had proposed. The implications of these findings are discussed with reference to Lacey (1967), and issues regarding validity and reliability are addressed. Introduction It is well known that heart rate changes when we experience different emotions. For example, your heart starts beating faster when a 'scary' scene occurs in a horror film, or you feel as if it skips a beat when you think you've seen a ghost. Detecting these changes is difficult and by making even more precise recordings of heart rate activity, other, smaller changes...

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