Issues papers
- Data issues in Wave 4 [PDF 156 KB] [Word 50 KB]
Data Issue paper no. 8
Covers Instances of child but not parent participation; Audio Computer-Assisted Self Interview (ACASI); and Matrix Reasoning. - Data issues in Wave 3.5 [PDF 120 KB]
[Word 116 KB]
Data Issue paper no. 7
Issues to be aware of in regard to questions Q30B, Q24K, Q13B, Q35K, Q25B/Q26B, Q12K/Q13K and some 'instructions to skip' questions, 'None of the above' questions, 'Yes/No' questions and some cases of substantial amounts of missing data. - Height differences [PDF 220 KB]
[Word 128 KB]
Data Issue paper no. 6
In the leave-behind questionnaires for both parents at Wave 1 and Wave 2, the parents were asked to report their height and weight so their body mass index (BMI) could be calculated. In cleaning Wave 2 data it was discovered that there was a large number of discrepancies between the values reported by the same people at Wave 1 and at Wave 2. - Cleaning of income data [PDF 80 KB]
[Word 56 KB]
Data Issue paper no. 5
The process for cleaning the Wave 1 data used adaptations of the data query rules coded into the Wave 2 CAPI instrument. As well as providing a logical framework to underpin the investigation, this will also help in making the data more consistent longitudinally. - Review of main educational program of 4-5 year olds [PDF 140 KB]
[Word 80 KB]
Data Issue paper no. 4
In investigating the quality of the data for the child’s educational program type (cpc06a4) at Wave 1, concerns were raised in regard to the consistency of responses to this item with other information from the face-to-face interview and the teacher questionnaire. To this extent it was decided to provide a corrected version of cpc06a4 as well as the original version.. - Imputations to solve missing data problems in Wave 2.5 [PDF 120 KB]
[Word 104 KB]
Data Issue paper no. 3
A number of the variables in the Wave 2.5 data files have higher levels of missingness than is usual for LSAC self-complete questionnaires. This paper details the imputations made, and also those considered and rejected, in order to limit the amount of missing data. - Report on Adapted PPVT-III and Who Am I?
[PDF 312 KB]
[Word 236 KB]
Data Issue paper no. 2
This paper is by Sheldon Rothman of the Australian Council for Educational Research.
The first wave of the Longitudinal Study of Australian Children (LSAC) used two tests with the four-year-old sample. The Adapted PPVT-III is a shortened version of the Peabody Picture Vocabulary Test, Third Edition, which is a test of receptive vocabulary used as a screening test of verbal ability. Who Am I? assesses the cognitive processes that underlie the learning of early literacy and numeracy skills - Cleaning of Time Use Diary Data [PDF 1.6 MB]
[Word 800 KB]
Data Issue paper no. 1
Note: To read PDF files you will need a reader. Many are available, such as Adobe Acrobat Reader, available free from the Adobe website: get.adobe.com/reader