zelazo

The <code>zelazo</code> object is a list with four components.

datasets

Data sets and scripts for text examples and exercises in
P. Dalgaard (2008), `Introductory Statistics with R', 2nd ed., Springer Verlag, ISBN 978-0387790534.

Peter Dalgaard

ISwR

Introductory Statistics with R

zelazo function

This is a list containing data on age at
 walking (in months) for four groups of infants:<dl>
<dt><code>active</code></dt>
<dd>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.</dd><dt><code>passive</code></dt>
<dd>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.</dd><dt><code>none</code></dt>
<dd>no training; these children had no special training, but
 were tested along with the children who underwent active or passive
 training.</dd><dt><code>ctr.8w</code></dt>
<dd>eighth-week controls; these children had no training and were only
 tested at the age of 8 weeks.</dd>
</dl>

Format

Age at walking — zelazo

This is a list containing data on age at
 walking (in months) for four groups of infants:<dl>
<dt><code>active</code></dt>
<dd>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.</dd>

<dt><code>passive</code></dt>
<dd>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.</dd>

<dt><code>none</code></dt>
<dd>no training; these children had no special training, but
 were tested along with the children who underwent active or passive
 training.</dd>

<dt><code>ctr.8w</code></dt>
<dd>eighth-week controls; these children had no training and were only
 tested at the age of 8 weeks.</dd>


</dl>

zelazo: Age at walking

Description

Usage

Arguments

Format