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Friday, June 24, 2011

Teori Tes Klasik dan Teori Respon Aitem

ABSTRAK

The aim of this research study was to evaluate and compared psychometrics characteristics of achievement based on classical test theory (CTT) and item response theory (IRT) especially based on one (1PL), two (2PL), and three (3PL) parameters models. The data for the research consist of Senior High School students’ responses to the Mathematics National Exit Examination Academic Year 2003/2004 in Yogyakarta. The subjects were 7000 (3500 male and 3500 female students). The test has 40 multiple choice test items and is criterion referenced. By comparing the indices from CTT and IRT, the overall conclusion from this evaluation is that 2PL model is preferable to use when evaluating the test.

Selengkapnya dapat diunduh pada link di bawah:

CTT DAN IRT

Validitas Internal Konstrak

Sejalan dengan pendapat Gorin (2007), Embretson (2007), Sireci (2007), penting kiranya menemukan bukti-bukti secara internal bahwa sebuah tes betul-betul valid mengukur selaras dengan fondasi konstraknya. Dengan kata lain, struktur internal tes yang berupa aitem-aitem perlu ditemukan tingkat validitasnya. Aspek struktural dalam validitas dapat ditegakkan dengan cara Confirmatory Factor Analysis (CFA) (Dimitrov, 2010) dan deteksi differential item functioning (DIF) (Kim, Kim, & Kamphaus, 2010). Dalam tulisan ini akan dibahas aspek struktural validitas melalui CFA.

Selengkapnya dapat diunduh pada link berikut:

Validitas Struktur Internal