Robert P. Liberman

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Adolf Hitler (Nazi, nazism, German leader).

9 Things You Might Not Know About Adolf Hitler

New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.

Why Is It Called Black Friday?

Rural Irish landscape, Sligo, Ireland.

Why Is Ireland Two Countries?

Thanksgiving Celebration Traditional Dinner Setting Food Concept

Why Is Thanksgiving in the U.S. Celebrated on a Thursday?

An ancient egyptian hieroglyphic painted carving showing the falcon headed god Horus seated on a throne and holding a golden fly whisk. Before him are the Pharoah Seti and the goddess Isis. Interior wall of the temple to Osiris at Abydos, Egypt.

11 Egyptian Gods and Goddesses

Plato (left) and Aristotle, detail from School of Athens, fresco by Raphael, 1508-11; in the Stanza della Segnatura, the Vatican. Plato points to the heavens and the realm of Forms, Aristotle to the earth and the realm of things.

Plato and Aristotle: How Do They Differ?

Saint Lucia Day. Young girl wears Lucia crown (tinsel halo) with candles. Holds Saint Lucia Day currant laced saffron buns (lussekatter or Lucia's cats). Observed December 13 honor virgin martyr Santa Lucia (St. Lucy). Luciadagen, Christmas, Sweden

7 Winter Solstice Celebrations From Around the World

Robert P. Liberman

American psychologist

Learn about this topic in these articles:

contribution to behavioral therapy

In behaviour therapy
psychologist Robert P. Liberman introduced assertion or personal effectiveness training as a fundamental component of the clinical services offered by community health centres.
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