CELF-4 Test Review- Final Draftdocx.pdf
The Clinical Evaluation of Language Fundamentals-Fourth Edition (CELF-4) is a standardized test designed to assess the presence of a language disorder or delay in children aged 5-21. Read More
Category: Normal Distribution/ Bell Curve
A normal distribution occurs when variables (i.e., test scores) plotted on a graph fall into a regular distribution around a single mean. It is also called the bell curve. In a normal distribution, about 68% of the scores fall within one standard deviation of the mean (34% on either side) and 96% of the scores will fall within 2 standard deviations of the mean (48% on either side).
Standard Error of Measurement and Confidence Intervals (Preschool Disability Evaluations: Module 10)
This module examines the role of standard error of measurement in standardized language and psycho-educational tests. Read More
Relevant Research: Psychometric Review of Language and Articulation Tests for Preschool Children
Source URL: View this document on the ASHA website
This was one of the first of many articles publishing research demonstrating the severe limitations of using commercially available child language tests when assessing children for speech and language disability. Read More
Validity Part 2- Validity, SES, and the WISC-IV Spanish (Preschool Disability Evaluations: Module 07)
In this module, Cate discusses the bias found in the WISC-4 Spanish. Read More
Validity Part 1- Construct Validity (Preschool Disability Evaluations: Module 06)
In this module, Cate discusses the validity of standardized tests and whether they measure what they claim to measure. Read More
Understanding Assessment: Understanding the Normal Distribution
A normal distribution, also called a bell curve, occurs when variables (i.e., test scores) plotted on a graph fall into a regular distribution around a single mean. In a normal distribution, about 96% of the scores will fall within 2 standard deviations of the mean. Read More
