Detection of small, medium and large grasshoppers in size-variable sequences

Data on performance of 51 human subjects that were asked to search for images of either black, grey or striped Tetrix subulata grasshoppers presented in size-variable sequences (5 small, 5 medium and 5 large presented in random order) on computer screens against photographs of natural grasshopper habitat. There were 17 subjects for each grasshopper colour. Grasshoppers were of the same colour within sequences but varied among sequences. The file includes information on background image identity, grasshopper colour morph, grasshopper image number, response time (time until response, either detection of grasshopper or incorrect response) and response (detection of grasshopper or incorrect response). Data for each subject/sequence is included on a separate sheet.