TY - GEN AU - Greenlees,I A AU - Graydon,J K AU - Maynard,I W TI - The impact of collective efficacy beliefs on effort and persistence in a group task SN - 0264-0414 PY - 1999///0525 KW - Adolescent KW - Adult KW - Analysis of Variance KW - Competitive Behavior KW - Ergometry KW - Exercise KW - physiology KW - Group Structure KW - Heart Rate KW - Humans KW - Motivation N1 - Publication Type: Journal Article UR - https://doi.org/10.1080/026404199366253 ER -