Are All Psychologists Liberals?

Here is a fascinating interview between psychologist Dr. Helen Smith and writer and medical engineer Dr. Barbara Oakley. The topic is the profession of psychology and its almost exclusively liberal bias.

Smith intros the interview on her blog as follows:

Many people do not trust psychologists and with good reason. They exclude half of the population or more due to their leftist politics. Barbara Oakley, author of Evil Genes,shares her insights on the American Psychological Association (APA) and their discrimination and stereotyping of any of us who do not agree with their leftist views.

Is the APA a non-partisan [non-profit] or an organization of partisan hacks?

Update: Astounding symmetry here: Why Most Journalists Are Democrats. This from... wait for it... Psychology Today.