Students are most likely to leave science, technology, engineering, and mathematics (STEM) majors during their first year of college. We developed an analytic approach using random forests to identify at-risk students. This method is deployable midway through the first semester and accounts for academic preparation, early engagement in university…

This study is an extension of two previous studies that provided profiles of persisting STEM majors overall (regardless of academic performance) and persisting STEM majors who earned semester GPAs of 3.0 or higher (Westrick, 2016, 2017). Using data from 25 four-year institutions, this study compared the mean ACT assessment scores, HSGPAs, and ACT…

Research has shown that science, technology, engineering, and mathematics (STEM) majors who are more academically prepared--especially in terms of their mathematics and science test scores--are more likely to be successful across a variety of outcomes: cumulative grade point average (GPA), persistence in a STEM major, and ultimately earning a STEM…

We examined a longstanding assumption in vocational psychology that people-things and data-ideas are bipolar dimensions. Two minimal criteria for bipolarity were proposed and examined across 3 studies: (a) The correlation between opposite interest types should be negative; (b) after correcting for systematic responding, the correlation should be…

This manual contains information about the American College Test (ACT) Plan® program. The principal focus of this manual is to document the Plan program's technical adequacy in light of its intended purposes. This manual supersedes the 2011 edition. The content of this manual responds to requirements of the testing industry as established in the…

Describes two studies comparing the criterion-related validity of sex-balanced ("unisex") interest inventory scales. Results indicate that psychometrically sound interest inventories can be constructed with sex-balanced items, and counselors may use inventories which provide sex-balanced score reports without sacrificing validity.…

The construct validity of vocational interest test scores was examined by finding the interest profiles of 15,447 college students in 51 majors. Standard scores based on same-sex norms were found to be more valid on this criterion than were raw scores. (CTM)

The popularity of first-year experience programs, freshman interest groups, and freshman seminars is evidence of a growing interest on the part of administrators and faculty in what happens to students during the first year of college. Theory and research indicate that students' experiences during the first year can set the tone for the remainder…

Discriminant function analyses involving two vocational interest inventories (ACT Interest Inventory and Lunneborg's Vocational Interest Inventory) to differentiate majors of college graduates supported the definition of three dimensions: Business Contact vs. Science, Business Detail vs. Arts, and Service vs. Technical. This common structure…

This report describes the rationale, development, technical characteristics, and use of the ACT Interest Inventory, which provides both descriptive information about an individual's interests and information to facilitate focused exploration of educational and career alternatives. The report begins with consideration of the question, "What…

The predictive validities of (1) a test of divergent thinking, (2) an experimental measure of creative performance, and (3) an inventory of creative personality characteristics were compared by correlating scores on each measure for 19 fifth graders with scores on the ACT Interest Inventory one year later. It was expected that each of the three…

Many students rely heavily on their interests when making college and career choices. Understanding how interests develop and relate to academic achievement will help high school counselors and other educators determine both when and how to help students prepare for college and a career. Students make more informed educational and career plans if…

A mapping procedure is presented for studying the construct validity of interest inventories that assess the six interest types defined by J. L. Holland. The 1989 revision of the American College Testing Program Interest Inventory (UNIACT) was used to assess the interests of 1,078 12th-grade students (497 males and 581 females) and 725 adults aged…

The controversy over what divergent thinking tests measure was addressed by conducting a study of the relationship between divergent thinking and vocational interests. Forty-one above-average fifth graders were administered Pattern and Line Meanings a year before they took the American College Testing Program (ACT) Interest Inventory. Divergent…

This manual contains preliminary information, largely of a technical nature, about the enhanced American College Testing (ACT) Program introduced in October 1989. It focuses primarily on the tests of educational development, the component of the program that has been substantially revised. Although one-third of the ACT Interest Inventory Items has…