Waterdata

This data set arises from the water-level task proposed by the Swiss psychologist Jean Piaget to
  assess children's understanding of the physical world.  This involves presenting a child with a 
  rectangular shaped, two-dimensional vessel on a sheet of paper tilted in specified clock-hour orientations.
  The child is then required to draw a line representing the still liquid in the tilted vessel.  Then,
  the degree of deviation about the horizontal is recorded.

datasets

A collection of R functions for analyzing mixture models.

Derek Young

mixtools

Tools for mixture models.

Waterdata function

This data frame consists of 405 children (the rows) and the degree of deviation about the horizontal
(the columns) for 8 specified clock-hour orientations (1, 2, 4, 5, 7, 8, 10, and 11 o'clock).

format

Thomas, H. and Lohaus, A.  (1993)
  <em>Modeling Growth and Individual Differences in Spatial Tasks</em>,
  University of Chicago Press, Chicago.

Waterdata: Water-Level Task Data Set

Description

Usage

Arguments

format

source