The study's teacher-made tests showed high reliability and criterion validity against NELSON¶

Claim · All claims
Evidence · 1 study · causal r2 · q2
Currency · newest study 2012 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 2015: tool and model accuracy changes quickly

Subclaims¶

q2 i? The twelve multiple-choice grammar tests had an internal-consistency reliability of 0.9589, and the pre-test correlated 0.965 with NELSON. → Jafary et al. 2012

Evidence¶

Jafary et al. 2012¶

Mohamad Reza Jafary, Noreen Nordin & Reza Mohajeri. (2012). The Effect of Dynamic versus Static Assessment on Syntactic Development of Iranian College Preparatory EFL Learners. English Language Teaching, 5(7). http://dx.doi.org/10.5539/elt.v5n7p149

q2 · i? · causal · r2

Psychometric analysis of the teacher-made instruments: KR-21 reliability estimates and Pearson correlation with the NELSON test on the pilot group of 20; the article reports "The reliability estimate of these tests is 0.9589" and criterion validity for the pre-test.

"The reliability estimate of these tests is 0.9589 (Table 2, Table 3, Table 4). According to the Table 3 the correlation coefficient of pre-test and NELSON is 0.96 and probability level is 0.01, so we come to conclusion that pre-test has been an acceptable test and has enjoyed criterion validity."

Discussion¶

Related Claims¶

• The 60-item grammar post-test showed KR-21 reliability of 0.94 and a moderate criterion-related validity correlation of 0.41 with the Nelson grammar total — related
• The Basic Technology Achievement Test (BTAT) showed reliability coefficients of 0.84 (KR-21) and 0.88 (KR-20) — related