The psychology of laughter

by Leo Markun

The psychology of laughter

by Ralph Piddington

The psychology of laughter and comedy

by J. Y. T. Greig

The Psychology of Laughter and Comedy,

by John Young Thomson Greig

Laughter

by Robert R. Provine

In laughter we emit sounds and express emotions that come from deep within our biologic being-grunts and cackles from ou...

Mirror of Laughter

by Alexander Kozintsev

Laughter

by Robert R. Province

Subversive laughter

by Ronald Scott Jenkins

Beyond laughter

by Martin Grotjahn

Understanding laughter

by Charles R. Gruner

The mirror of laughter

by A. G. Kozint︠s︡ev

The mirror of laughter

by A. G. Kozint︠s︡ev

The Morality of Laughter

by F. H. Buckley

What is lighter and more frivolous than laughter?

In the Event of Laughter

by Alfie Bown, Esther Rashkin

Humor, play, & laughter

by Joseph A. Michelli

Laughter and tears

by Elisabeth D. Bing

Taking laughter seriously

by John Morreall

Humour, comedy and laughter

by Lidia D. Sciama

Laughter, the best medicine

by Robert Holden

Humour, Comedy and Laughter