Italic text is represented as _italics_. Underlined text is represented as __underline__. Subscripts are represented as #subscripts#. Footnotes are collected at the end of each chapter. Transcriber's notes and translations, in letters, have been added and collected at the end of the chapter, after the footnotes. [Single-brackets] in the original text have been changed to [[double-brackets]] to distinguish from edits within this version of the text. #Single pound signs# in the original text have been changed to ##double pound signs##, to distinguish from #subscript text#. Shortly after the year 1924 Leta S. Hollingworth prepared a manuscript on "Children above 180 IQ (Stanford-Binet)" in whi…
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