PIAAC Cycle 2 OUTCOME MEASURES

Assessment domain(s)
  • Numeracy
  • Literacy
  • Adaptive problem solving
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Achievement and test scales
Scale Creation

In general, the approach was similar to cycle 1, i.e., the achievement scales were created using plausible values; these were drawn from a posteriori distribution by combining the IRT scaling of the cognitive items with a latent regression model using information from the BQ. Each adult respondent was assigned 10 plausible values in each of the achievement scales.

 

List of Achievement Scales

For the Numeracy and Literacy Scales, there are 5 scale levels:

  • Level 5 (>=376)
  • Level 4 (326 - 375)
  • Level 3 (276 - 325)
  • Level 2 (226 - 275)
  • Level 1 (176 - 225)
  • Below level 1 (<176)

 

For the Adaptive Problem Solving Scale, there are 4 scale levels:

  • Level 4 (>=326)
  • Level 3 (276 - 325)
  • Level 2 (226 - 275)
  • Level 1 (176 - 225)
  • Below level 1 (<176)
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Questionnaire and background scales
Scale Creation

In general, the approach was similar to cycle 1, i.e., the database contains several scales computed using subsets of background questions. Scales were calculated using item response theory (IRT). In addition, categorical variables were created using these scales by classifying respondents into quintiles.

 

List of Background Scales
  • Index of use of ICT skills at home (derived)
  • Index of use of ICT skills at work (derived)
  • Index of use of influencing skills at work (derived)
  • Index of learning at work (derived)
  • Index of use of numeracy skills at home (basic and advanced - derived)
  • Index of use of numeracy skills at work (basic and advanced - derived)
  • Index of use of reading skills at home (prose and document texts - derived)
  • Index of use of reading skills at work (prose and document texts - derived)
  • Index of use of task discretion at work (derived)
  • Index of use of writing skills at home (derived)
  • Index of use of writing skills at work (derived)
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