Methods and systems for assessing latent traits using probabilistic scoring

A method for assessing a latent trait in a test subject, comprising the steps of:

• providing a graphical user interface for allowing the input of a test subject's first test item responses to a plurality of first test items that are administered to the test subject to elicit the first test item responses from the test subject;
• receiving the test subject's responses to at least an initial first test item and a subsequent first test item;
• determining, using one or more processors, an initial first sub-region probability of the test subject lying within a first sub-region of a first latent trait from the test subject's response to the initial first test item;
• and
• determining, using one or more processors, a subsequent first sub-region probability of the test subject lying within the first sub-region of the first latent trait using:
• the test subject's response to the subsequent first test item to ascertain a conditional response probability, and
• the initial first sub-region probability as a prior first sub-region probability.