This time, as in [year X], only two series are given, one of which must be repeated without error. The two series are: 2–1–8–3–4–3–9 and 9–7–2–8–4–7–5. Note that in none of the tests of repeating digits is it permissible to warn the subject of the number to be given.
Remarks. Binet originally placed this test in year XII, giving three trials, but later moved it to year XV. Goddard and Kuhlmann retain it in year XII. Our data show that when three trials are given the test is too easy for year XIV, but that it fits this age when only two trials are allowed; that after the age of 12 or 14 years memory for relatively meaningless material, like digits or nonsense syllables, improves but little; and that above this level it does not correlate very closely with intelligence.
FOOTNOTES:
[74] See [IX, 5], and [XII, 4].
[75] Columbia University Contributions to Education, no. 37, 1910.
CHAPTER XIX
INSTRUCTIONS FOR “AVERAGE ADULT”
Average adult, 1: vocabulary (sixty-five definitions, 11,700 words)
Procedure and Scoring, as in previous vocabulary tests.[76] At the average adult level sixty-five words should be correctly defined.