orm boards, (4) picture completion, (5) clerical checking, and (6) picture absurdities (Kellogg and Morton, 1978, p. 3).
Raw scores on each of the six tests are converted to scaled scores through the use of a table provided in the Revised Beta Examination Manual. The six scaled scores are then summed. Summed scale scores may then be converted to a norm either an IQ or a percentile through the use of tables provided in the Revised Beta Examination Manual. The sum of scaled scores is converted to an IQ equivalent by age group, of which seven are included in the applicable table in the Revised Beta Examination Manual. The conversion procedure for percentile equivalents is identical, and a separate table for this purpose is provided in the Revised Beta Examination Manual.
The Group Examination Beta was developed by the United States Army during the First World War for the assessment of the intellectual ability of illiterate recruits, and the instrument was formalized in 1920 (Kellogg and Morton, 1978, p. 3). The Group Examination Beta was revised in 1934 to make the instrument more suitable for use civilian purposes. The 1934 revision was designated as the Revised Beta Examination (Kellogg and Morton, 1978, p. 3). A second revision of the instrument was introduced in 1978. Since that time, the 1934 revision has been know as the Revised Beta Examination, First Edition, or Beta I, while the second revision (the version currently in use) has been known as the Revised Beta Examination, Second Edition, or Beta II (Kellogg and Morton, 1978, p. 3).
The reliability of the Revised Beta Examination was established through the administration of the instrument to a "sample of 79 students (40 males and 39 females) aged 16 17 enrolled in a large suburban school district in the South" (Kellogg and Morton, 1978, p. 22). A test retest procedure was used in the establishment of instrument reliability (Kellogg and Morton, 1978, p. 22). Th...