Many of Birdwhistell's publications were short pieces, gathered together to make up "Kinesics and Context". Birdwhistell spent over fifty years analyzing kinesics. Morain refers to "kinesics" which should be part of any learning programme that includes perception. Experts have labeled the term kinesics to mean communicating through body movement. Birdwhistell pioneered the original study of nonverbal communication, which he called kinesics. Kinesics is the study of body movements. These non-verbal expressions are conveyed through kinesics, proxemics, physical appearance and artifacts, and chronemics. The aspects of kinesics are face, eye contact, gesture, posture, body movements. Despite that, "body language" is still more widely used than "kinesics". Kinesics was first used in 1952 by an anthropologist named Ray Birdwhistell.