Search Results
Title: Further Examination of the NLSY PIAT-Math and PPVT-R Items that Exhibit the Flynn Effect
Resulting in 1 citation.
| 1. |
Rodgers, Joseph Lee Ang, Siew Ching Beaujean, A. Alexander Cooper-Twamley, Susan |
|
Further Examination of the NLSY PIAT-Math and PPVT-R Items that Exhibit the Flynn Effect Presented: Madrid, Spain, International Society for Intelligence Research 10th Annual Conference, December 17-19, 2009 Cohort(s): Children of the NLSY79 Publisher: International Society for Intelligence Research Keyword(s): Flynn Effect; I.Q.; Intelligence Tests; Peabody Individual Achievement Test (PIAT- Math); Peabody Picture Vocabulary Test (PPVT); Test Scores/Test theory/IRT Permission to reprint the abstract has not been received from the publisher. The corpus of Flynn Effect (FE) research has examined differences in aggregated IQ and IQ-equivalent scores over time, paying little attention to the items that comprise these scores. In doing so, they assume that all the items act very similarly, which may not be the case. Consequently, by not using item-level data, such studies do not analyze all the information available from a test administration. In the current paper we evaluate the Flynn Effect at the item level in PIAT-Math and PPVT-R from the National Longitudinal Study of Youth. Extending the work previously done by Rodgers and Ang (2008), this study compares the PIAT-Math items that Rodgers and Ang found to exhibit non-invariance over time using item-level unstandardized regression slopes with the PIAT-Math items Beaujean and Osterlind (2008) found to exhibit non-invariance over time using item response theory. Second, again following Rodgers and Ang, this study examines the item content of the PPVT-R items that Beaujean and Osterlind found to exhibit non-invariance over time. Preliminary analysis shows that many of the PPVT-R items that exhibited noninvariance were in the interpersonal domain, with a less strong relationship being found with items in the home (e.g., furniture, appliances) and environment (foliage, terrain) domains. |
|
|
Bibliography Citation
Rodgers, Joseph Lee, Siew Ching Ang, A. Alexander Beaujean and Susan Cooper-Twamley. "Further Examination of the NLSY PIAT-Math and PPVT-R Items that Exhibit the Flynn Effect." Presented: Madrid, Spain, International Society for Intelligence Research 10th Annual Conference, December 17-19, 2009. |