At 2 years 11 months she asked the meaning of the words "excitement," "guarantee," and "neatness." She constantly asked about the meaning of words. She sang songs to herself, such as "Go into the next room, where there's no steam heat." At this age she asked how babies are made. "Where do they come from? How do they come out? Why? Will a baby grow in my belly when I'm a big lady?" At 3 years she wanted to know if people "wear out" like brushes and combs. She purchased for an imaginary house "an extrola," "a gate-legged table," "a gate-legged bookcase," and "gate-legged chairs." At 3 years 0 months, waiting for her cereal to cool, a lump of butter put into it is slowly melting. H remarks, her eyes on the butter, "Now it's a baby--baby died--no more baby." And noting the snow, she said, "My muffler is as white as the snow." She looks again at snow and muffler. "No, it's a _different_ white." There is on record a vocabulary compiled by the mother when H was 3 years old (May 23, 1927). It was based on a count of "all the words _used_ by H regardless of whether she could tell exactly what they mean. Tenses of verbs are given but no plurals of nouns." The list includes about 1400 words, approximately classifiable as follows: Nouns 745 Pronouns 17 Verbs 401 Prepositions 15 Adjectives 161 Conjunctions 5 Adverbs 63 Interjections 9 MENTAL MEASUREMENTS _March 24, 1927_. Age 3 years. Stanford-Binet examination given by Dr. Ella Woodyard, with the following results: Mental Age, 5-6; IQ, 183. _March 8, 1930_. Age 5 years 11 months. Stanford-Binet examination given by Leta S. Hollingworth, with the following results: Mental Age, 8-9; IQ, 148. At this time H was in Grade 1A. _April 21, 1933_. Age 9 years 1 month. Stanford-Binet examination given by Alice M. Holmes, with the following results: Mental Age, 17-2; IQ, 189. At this age she was in Grades 5A and 6B, P.S. 206, Manhattan, and is described as "a quiet and unassuming person, but most responsive. She would like to be with children her own mental age, for then she would get a mental stimulus and a social life that seems to be denied her now." In this same month (April, 1933) the New Stanford Achievement Test: Advanced Battery: Form V, given by Alice M. Holmes, showed scores as follows: Paragraph Meaning 109 Geography 105 Word Meaning 103 Physiology and Hygiene 90 Dictation 87 Arithmetic Reasoning 94 Language Usage 91 Arithmetic Computation 110 Literature 91 Average score 97.8 History and Civics 98 _September 11, 1934_. Age 10 years 6 months. H was given Army Alpha, Form 8, by Leta S. Hollingworth. Her score was 135 points, which is median for college sophomores. H was then in Grade 7B. It is noted that "This result is just what would have been predicted from tests made by us when H was 3 years old."