CALIFICACIÓN DEL WISC - V / Escala Wechsler de Inteligencia para Niños – Quinta Edición - GRUPO 6

Introduction to Wechsler Intelligence Scale for Children

Overview of the Presentation

• The group, consisting of Andreina Chu, Andrea Valdo, and the speaker, introduces their topic on how to score the Wechsler Intelligence Scale for Children in a psychological testing course.

• They emphasize the importance of calculating the chronological age of the patient as a first step in scoring.

Calculating Chronological Age

• The date of application is set for April 29, 2025; they subtract the patient's birth date (February 1, 2013) from this date.

• The resulting chronological age is calculated as 12 years, 3 months, and 27 days.

Direct Scores to Scalar Scores Conversion

Scoring Process

• Direct scores from various subtests are collected: Cubes (42), Similarities (30), Matrices (27), etc., up to Arithmetic.

• These direct scores will be converted into scalar scores using a specific table found in the manual on page 264.

Using Tables for Conversion

• For example, a direct score of 42 in Cubes corresponds to a scalar score of 14 according to Table A1 for children aged approximately 12 years and three months.

• This process continues through all subtests until all scalar scores are filled out accordingly.

Summing Scalar Scores

Total Score Calculation

• To find total scale scores, only seven numbers outside parentheses are summed up; this results in an overall score of 82.

• The conversion from scalar sums to composite scores requires referencing Table A2 on page 279 of the manual. Each index's value is noted here: Verbal Comprehension (20), Visuospatial (27), Fluid Reasoning (29), Working Memory (19), Processing Speed (18). Total = 82.

Confidence Intervals and Percentiles

Understanding Results

• For each composite score derived from previous calculations, confidence intervals at a level of 95% are established: e.g., Verbal Comprehension has an index value of 100 with a percentile rank at around fifty percent and confidence interval ranging between 91 and109.

• Similar processes apply for other indices like Visuospatial which yields an index value of119 with corresponding percentiles and confidence intervals detailed similarly.

Finalizing Composite Scores

Total IQ Calculation

• The total IQ is determined by looking up the sum score in another table on page282; here it shows that an overall sum score of82 corresponds with an IQ range between105 and118 at a percentile rank around79%.

Profile Completion

• After obtaining these values, they plot them onto graphs or tables representing performance across different cognitive areas such as verbal comprehension or fluid reasoning while ensuring clarity through visual representation by connecting points graphically.

Primary Analysis

Index Values

• They begin analyzing primary indices based on previously calculated composite scores noting down values like Verbal Comprehension(100)and Visuospatial(119).

• Comparison values are also computed by averaging five primary indices leading to further insights about cognitive strengths or weaknesses.

Significance Testing

Evaluating Differences

• Critical values are referenced from Table B1 where differences between indices must be compared against critical significance levels indicating whether observed differences hold statistical significance.

• If differences exceed critical thresholds then those areas may indicate significant cognitive strengths or weaknesses depending upon whether positive or negative outcomes arise respectively.

Base Rates

Establishing Baselines

• Base rates are established using relevant tables correlating observed performance metrics against normative data allowing evaluators insight into relative performance levels within specified contexts.

Conclusion

The presentation provides comprehensive guidance on administering and interpreting results from Wechsler Intelligence Scale assessments specifically tailored towards children emphasizing systematic approaches throughout each stage including calculation methods along with necessary references back towards standardized manuals ensuring accuracy during evaluations.