What refinement to binary matrices for uncovering an underlying one-dimensional scale was developed by Louis Guttman in 1950?

Answer

The Scalogram

Louis Guttman developed the Scalogram specifically to order data matrices where entries were scored as 1 or 0, aiming to reveal the structure corresponding to a single underlying scale.

What refinement to binary matrices for uncovering an underlying one-dimensional scale was developed by Louis Guttman in 1950?
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