Letters Standardized Tests: A Third Possibility + See all authors and affiliations Science 04 Dec 1964:Vol. 146, Issue 3649, pp. 1252DOI: 10.1126/science.146.3649.1252 J. W. HaslettFind this author on Google Scholar Find this author on PubMed Search for this author on this site Article Info & Metrics eLetters PDF This is a PDF-only article. The first page of the PDF of this article appears below.
Science Vol 146, Issue 364904 December 1964 Table of Contents Print Table of Contents Back Matter (PDF) Ed Board (PDF) Front Matter (PDF)
