: The American style is used by most American newspapers, publishing houses and style guides in the United States and Canada ( including the Modern Language Association's MLA Style Manual, the American Psychological Association's APA Publication Manual, the University of Chicago's The Chicago Manual of Style, the American Institute of Physics's AIP Style Manual, the American Medical Association's AMA Manual of Style, the American Political Science Association's APSA Style Manual, the Associated Press ' The AP Guide to Punctuation and the Canadian Public Works ' The Canadian Style ).

Rogers is widely considered to be one of the founding fathers of psychotherapy research and was honored for his pioneering research with the Award for Distinguished Scientific Contributions by the American Psychological Association in 1956.

In 1947 he was elected President of the American Psychological Association.

The American Psychological Association passed a resolution in 1950 calling " attention to the fact that these claims are not supported by empirical evidence of the sort required for the establishment of scientific generalizations.

The consensus, however, in position statements from the American Psychiatric Association, American Psychological Association and other institutions in many other countries, is that the research and clinical literature demonstrate that homosexuality is a normal and positive variation of human sexuality, and that any social exclusion or difficulties with homosexuality are a problem of society.

Thirteen other American Psychological Association divisions have endorsed the petition.

In July 2004 the American Psychological Association issued a statement that DADT " discriminates on the basis of sexual orientation " and that " Empirical evidence fails to show that sexual orientation is germane to any aspect of military effectiveness including unit cohesion, morale, recruitment and retention.

Holding membership among Division 15 of the American Psychological Association and / or multiple divisions of the American Educational Research Association is common among educational psychologists.

* Division 15 of the American Psychological Association

According to the American Psychological Association ( APA ), there are numerous theories about the origins of a person's sexual orientation, but some believe that " sexual orientation is most likely the result of a complex interaction of environmental, cognitive and biological factors ," and that genetic factors play a " significant role " in determining a person's sexuality.

A new definition of hypnosis, derived from academic psychology, was provided in 2005, when the Society for Psychological Hypnosis, Division 30 of the American Psychological Association ( APA ), published the following formal definition:

The American Psychological Association published a study comparing the effects of hypnosis, ordinary suggestion and placebo in reducing pain.

The American Medical Association and the American Psychological Association caution against repressed memory therapy in cases of alleged childhood trauma, stating that " it is impossible, without corroborative evidence, to distinguish a true memory from a false one.

The American Psychological Association's 1995 report Intelligence: Knowns and Unknowns stated that the correlations for most " negative outcome " variables are typically smaller than 0. 20, which means that the explained variance is less than 4 %.

The 1996 Task Force investigation on Intelligence sponsored by the American Psychological Association concluded that there are significant variations in IQ across races.