discussion3

Discussion #3

Before starting the work;

1. Read Darr’s Guide to Validity and Cook et al.’s Concepts in Validity & Reliability.

o Darr'sGuideToValidity.pdf ( attached )

o Cook etal06 Concepts in Validity Reliability for Psychom/etric Instr.pdf (

attached )

Note: that the Darr article approaches validity more from the stand point of establishing

validity evidence for local classroom assessments while the Cook et al. article focuses on

establishing validity evidence for large-scale assessments.

2. Discuss what is meant by the following sentence: Tests are not valid; only inferences can be valid.

Length: half a page to a page maximum.

Due : in 12 hours