zelazo {ISwR} | R Documentation |
Age at walking
Description
The zelazo
object is a list with four components.
Usage
zelazo
Format
This is a list containing data on age at
walking (in months) for four groups of infants:
active
- test group receiving active training; these children had
their walking and placing reflexes
trained during four three-minute sessions that took place every day
from their second to their eighth week of life.
passive
- passive training group; these children received the same types of
social and gross motor stimulation,
but did not have their specific walking and placing reflexes
trained.
none
- no training; these children had no special training, but
were tested along with the children who underwent active or passive
training.
ctr.8w
- eighth-week controls; these children had no training and were only
tested at the age of 8 weeks.
Note
When asked to enter these data from a text source, many
students will use one vector per group and will need to reformat data
into a data frame for some uses. The rather unusual format of this data set
mimics that situation.
Source
P.R. Zelazo, N.A. Zelazo, and S. Kolb (1972),
“Walking” in the newborn, Science, 176: 314–315.
[Package
ISwR version 2.0-5
Index]