ZelazoKolb1972 {restriktor}

"Walking" in the newborn (4 treatment groups)

Description

The Zelazo, Zelazo and Kolb (1972) dataset consists of ages (in months) at which an infant starts to walk alone from four different treatment groups (Active-exercise, Passive-exercise, 8 week Control, No-exercise).

Usage

data(ZelazoKolb1972)

Format

A data frame of 23 observations of 4 treatment variables.

Age

Age in months

Group

Active-exercise, Passive-exercise, 8-week Control group, No-exercise

References

Zelazo, P.R., Zelazo, N.A., and Kolb, S. (1972). "Walking in the Newborn". Science, New Series, 176, 314-315

Examples

head(ZelazoKolb1972)