"the conference of psychologists at which the ideas of community psychology and the participant-conceptualizer role were first defined"

"The conference of psychologists, which took place at Swampscott, which the ideas of community psychology and the participant-conceptualizer role were first defined."

answer; i believe the correct answer is (4) flip a coin as each participant arrives,heads indicates assignment to the first group: tails indicates assignment to the second group;

aliens arent real sorry bud