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Related Experiment Video

Updated: Jul 7, 2026

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools

Published on: June 20, 2020

Nonequivalent survey consolidation: an example from functional caregiving.

Nikolaus Bezruczko¹, Shu-Pi C Chen

¹Measurement and Evaluation Consulting. Nbezruczko@msn.com

Journal of Applied Measurement

|February 6, 2008

Summary

This study validated Functional Caregiving (FC) measures for mothers of children with intellectual disabilities. Findings show stable measurement properties in urban settings, but highlight challenges in generalizing to suburban populations.

Related Experiment Videos

Last Updated: Jul 7, 2026

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools

Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools

Published on: June 20, 2020

Area of Science:

Psychology
Special Education
Measurement

Background:

Functional Caregiving (FC) is a construct examining maternal care for children with intellectual disabilities.
Existing FC measures utilize nonequivalent urban and suburban survey forms.
Generalizing measurement principles from achievement tests to surveys is an area for development.

Purpose of the Study:

To equate two nonequivalent survey forms for Functional Caregiving (FC).
To expand FC foundations by establishing linear measurement properties and hierarchical structures.
To create a calibrated item bank and gather further construct validity data.

Main Methods:

Equating procedures were applied to two nonequivalent survey forms (urban and suburban).
Item response theory (IRT) models were used to analyze measurement properties.
Analysis included establishing linear measurement properties, replicating hierarchical structures, and consolidating forms.

Main Results:

Invariant item parameters were supported for a fixed 96-item form in two urban samples (N=186).
FC measures demonstrated expected relationships with age, mental depression, and health status.
Only five common items between urban and suburban forms were statistically stable, indicating potential interactions.

Conclusions:

The study successfully generalized school-based achievement test equating principles to survey methods for FC.
Measurement properties of FC items were established, and a hierarchical structure was replicated in an urban sample.
Challenges remain in generalizing FC measures across urban and suburban contexts due to interacting variables.