According to classical test theory, test reliability is based on the notion that test score reliability comprises two parts: true scores and error. A true score is an expected score on a test over an infinite number of testing instances; it is a theoretical idea that can never be known for sure. Errors are inaccuracies that make actual (observed) test scores differ from true scores.

There are several different ways to measure a test’s reliability. Test–retest reliability looks at the correlation between original test administrations and retests. The span of time between the two administrations should be less that the time for the true scores to vary. Test–retest reliability looks at error due to time.

Alternate-form reliability looks at the correlation between two different versions of a test. Split-half reliability is similar to alternative-form reliability, splitting a single test into two halves, usually odd and even items, and correlating scores on the two halves. Cronbach’s coefficient alpha is also similar, essentially providing the average of all possible split-half reliabilities. Alternate-form, split-half, and Cronbach’s coefficient alpha all look at error due to content sampling.

For this Discussion, pretend that you have been contracted to create a test to assess intelligence. Think about factors you might consider and steps you might take to ensure reliability of this test.

With these thoughts in mind:

Post by Day 4 a description of factors you might consider and steps you might take to ensure reliability of the intelligence test. Explain why these factors and steps are important.

Be sure to support your postings and responses with specific references to the Learning Resources. Zero plagiarizing, APA formatting, Quote work,’s

Looking for solution of this Assignment?


We deliver quality original papers

Our experts write quality original papers using academic databases.  

Free revisions

We offer our clients multiple free revisions just to ensure you get what you want.

Discounted prices

All our prices are discounted which makes it affordable to you. Use code FIRST15 to get your discount

100% originality

We deliver papers that are written from scratch to deliver 100% originality. Our papers are free from plagiarism and NO similarity

On-time delivery

We will deliver your paper on time even on short notice or  short deadline, overnight essay or even an urgent essay