How international is psychology?

P sychology claims to be an international discipline. This claim has been based upon subjective estimates of attendance at international congresses, status reports from selected countries published within edited volumes, and a survey of the member countries of the International Union of Psychological Science (IUPsyS) (Rosenzweig, 1992). However, to be truly international, the work of psychologists in countries around the world must be internationally disseminated. Systematic examination of international congress presentations and abstracts of published psychological literature indexed on widely available electronic databases (e.g., PsycLIT) provides a more objective means of documenting the international presence of psychology. In this article, counts by country were made of research contributions reported within PsycLIT and on the programs of International Congresses of Applied Psychology over the five years in which the congresses were held from 1982 to 1998. Analyses of these data revealed PsycLIT to be more international in scope than previously assumed—45% of its entries were by authors from outside the US. Coverage of research from developing countries was even more limited within PsycLIT (4.67%), but proportionally greater within international congresses (10%). PsycLIT entries not in the English language were found noticeably to have declined from approximately 12–14% levels in the 1980s to only about 6% in the 1990s. An index of the presence of psychology in each country, based upon presentations at IAAP congresses, memberships in international associations, and the extent of PsycLIT entries over the previous three decades, provided an objective, empirically‐based answer to the question ‘How International is Psychology?' This index indicated that psychology has a significant presence in 47 countries, a presence in another 22 countries, but minimal or no presence in 82 other countries. The meaning of these data for the discipline and ways in which psychology's worldwide presence might be strengthened and extended were discussed.