Decision strategies for the A Not-A, 2AFC and 2AFC-reminder tasks: Empirical tests

Discriminations of the A–Not A difference test improved when “A” was familiarized using a brand image

“…Reversing the distributions for these two responses would have yielded the same d 0 estimates. A preliminary ROC analysis using an unequal variance model showed that the slope, the ratio of the variances of the noise to noise plus signal distributions (Hautus, Shepherd, & Peng, 2011), was not different significantly from 1. This indicated that it was appropriate to use an equal variance signal detection model to analyze our data.…”

Sensory discrimination by consumers of multiple stimuli from a reference: Stimulus configuration in A-Not AR and constant-ref. duo-trio superior to triangle and unspecified tetrad?

“…DTF/2-AFCR methods, it was discovered recently that when the fixed design is used, the duo-trio 'comparison of distances' (COD) strategy was adopted when untrained/naïve subjects were used for discriminations (Choi et al, 2014;Kim et al, 2014;Stocks, 2014), while the 2-AFCR b and s decision strategies, which result in the same d 0 estimates as the 2-AFC b and s decision strategy models, were more likely to be adopted when the subjects were well trained and had practiced for the discriminations using the tested stimuli (Hautus, Shepherd, & Peng, 2011a, 2011bStocks et al, 2014). For more explanation of the models using the 2-AFCR s decision strategy, and 2-AFC b or s decision strategy, see Hautus et al (2009).…”

A Simplified Form of the Psychometric Function for the m‐Alternative Forced Choice (mAFC) Method

“…; Hautus et al . ). The m independent judgments for m samples ( ) in the general form of the psychometric function in (1) for the m AFC and the ( m −1) comparative judgments ( ) in the simplified form of the psychometric function for the m AFC produce identical results as concluded in (5) and (6).…”