Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Influence of the number of item response categories (K) on Cronbach's alpha (αT for the true responses) for different proportions of positive polarity items (m+/m) and mean differences between the true and random responses (μT-μR). There are 20% random responses and 5% fixed responses.
