Chapter Two Appendix A

Purpose of screening and informal initial assessment

• Determine if signs of potential LD are present
• Identify potential difficult areas for further investigation
• Identify the learner's strengths and weaknesses to help plan for instruction

Criteria for rating screening tools

• Reliable - the screening material reliably measures indicators of potential learning disabilities and yields consistent results (if the screening tool was given to the same person again, similar indicators of potential learning disabilities would be evident). Note: a low standard of error should be evident.
• Valid - the screening material adequately represents the full range of characteristics associated with learning disabilities. The screening material is consistent with what is currently known about learning disabilities. It covers a scope sufficient to provide an initial assessment in several areas such as language, motor, organization and social skills (look for a description of which learning disability indicators may be assessed with the instrument).
• Cost-effective - including initial purchase and ongoing purchases of related materials such as question booklets, score sheets etc.
• Time - the time required to conduct the screening procedures is reasonable. The tool is quick to administer, score, and interpret.
• Requirements for learning to use the screening tool are reasonable - requirements may range from reviewing the instructions and user manual to participating in a training session.