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A validity study of the posture and fine motor assessment of infants
1Nisonger Center, Ohio State University, Columbus 43210.
Insights
The Posture and Fine Motor Assessment of Infants (PFMAI) demonstrates adequate validity and reliability for clinical and research use in assessing infant motor development. It accurately differentiates between full-term and premature infants.
Area of Science:
- Pediatric physical therapy
- Infant motor development assessment
- Clinical assessment tools
Background:
- The Posture and Fine Motor Assessment of Infants (PFMAI) is a tool used to evaluate motor skills in infants.
- Validating assessment tools is crucial for accurate diagnosis and intervention planning.
- Infant motor development can be affected by prematurity and medical risk factors.
Purpose of the Study:
- To investigate the concurrent and construct validity of the Posture and Fine Motor Assessment of Infants (PFMAI).
- To determine if the PFMAI can effectively differentiate between healthy, full-term infants and premature infants with medical risk factors.
Main Methods:
- Administered the PFMAI to 90 infants (65 full-term, 25 premature).
- Assessed concurrent validity using the Peabody Developmental Motor Scales and the Bayley Scales of Infant Development.
- Evaluated construct validity by analyzing the PFMAI's ability to discriminate between full-term and premature infants.
Main Results:
- Strong positive correlations were found between PFMAI scales and corresponding scales on the Peabody and Bayley assessments.
- The PFMAI accurately classified 78% of infants as full-term or premature.
- The PFMAI correctly identified 66.7% of infants across full-term, low-risk premature, and high-risk premature categories.
Conclusions:
- The PFMAI exhibits adequate concurrent and construct validity.
- The PFMAI is a reliable instrument for both clinical practice and research involving infant motor assessment.
- The PFMAI effectively distinguishes developmental differences related to prematurity and medical risk.
Abstract:
This study investigated the concurrent and construct validity of the Posture and Fine Motor Assessment of Infants (PFMAI) (Case-Smith, 1991). The subjects were 90 infants, 65 of whom were healthy and full-term and 25 of whom were premature and had medical risk factors. Concurrent validity was investigated through administration of the Peabody Developmental Motor Scales (Folio & Fewell, 1983) and the PFMAI (n = 25). Strong positive correlations resulted between the Peabody Gross Motor scale and PFMAI Posture scale and between the Peabody Fine Motor scale and PFMAI Fine Motor scale. Concurrent validity was also measured through correlation scores on the Bayley Scales of Infant Development (Bayley, 1969) with scores on the PFMAI. The correlations between the Bayley Motor scale and the PFMAI Posture scale and between the Bayley Mental scale and the PFMAI Fine Motor scale were high. Construct validity was estimated through an evaluation of how accurately the PFMAI discriminated between the premature subjects and the full-term subjects. A discriminant analysis indicated that the PFMAI accurately classified 78% of the subjects as being either premature or full-term (i.e., 80% of the full-term subjects and 72% of the premature subjects). When the premature subjects were categorized as low-risk or high-risk according to their medical histories, the PFMAI accurately classified 66.7% of the total subject population as full-term, low-risk premature, or high-risk premature. These results indicate that the PFMAI has the adequate reliability and validity necessary for use as a clinical and a research instrument.(ABSTRACT TRUNCATED AT 250 WORDS)
