WAIS-IV and WISC-V Report: Indices, Interpretation, and Template

The Wechsler scales, WAIS-IV for adults and WISC-V for children, are among the most widely used tests in neuropsychology. However, a high-quality report is not just about the Full Scale IQ (FSIQ): it interprets the indices, their dispersion, and their clinical coherence.

This page details the indices, interpretation principles, and report structure, with a template to download.

Reading beyond the Full Scale IQ

WAIS-IV Indices (Adult)

The WAIS-IV is organized around four indices, which make up the Full Scale IQ:

• VCI, Verbal Comprehension. Verbal reasoning, acquired knowledge.
• PRI, Perceptual Reasoning. Visual reasoning and perceptual organisation.
• WMI, Working Memory. Retention and manipulation of information.
• PSI, Processing Speed. Speed of processing simple information.

WISC-V Indices (Child)

The WISC-V distinguishes five primary index scales (perceptual reasoning was split here):

• VCI, Verbal Comprehension.
• VSI, Visual Spatial. Analysis and mental manipulation of spatial designs.
• FRI, Fluid Reasoning. Logical reasoning on novel material.
• WMI, Working Memory.
• PSI, Processing Speed.

Ancillary indices (e.g., the General Ability Index) can complement the analysis in complex clinical situations.

Interpreting Indices Methodically

1. Analyze dispersion. Are the indices homogeneous or contrasting?
2. Test significance. Are the differences between indices statistically significant?
3. Assess frequency. Is a significant difference also rare in the reference population?
4. Cross-reference with clinical observations. Compare scores with the clinical history, behaviour during testing, and the patient's complaints.

The Structure of a WAIS / WISC Report

1. Identification and Reason for Referral. Patient, date, context of the request.
2. Clinical history / History. Elements useful for understanding the results.
3. Behaviour During Testing. Cooperation, fatigability, strategies, performance anxiety.
4. Results by Index. Score, confidence interval, percentile rank, index by index.
5. Dispersion Analysis. Significant discrepancies and their clinical meaning.
6. Synthesis. Strengths and weaknesses, linking with history, hypotheses.
7. Conclusion and Cautious Recommendations. Response to the referral, recommendations, without overstepping into medical diagnosis.

Saving Time on Writing

Going over each index, its confidence interval, and its interpretation is time-consuming. Start with a fixed template, standardise your interpretation phrasing, and dictate your observations right after the administration.

This is what Delta does: you capture your observations via live note-taking or post-administration dictation, and the tool generates a structured report according to your template, with a longitudinal patient memory that reuses the patient history from one assessment to another (useful for comparing a follow-up assessment to the initial one). HDS-certified hosting, GDPR compliant.

Frequently Asked Questions