WebJun 7, 2024 · If all you signal levels lead to high hit rates and you don't know the underlying psychometric function, your estimate of the FA rate is going to be crappy. If they are all at … WebSignal Detection Theory and the motion discrimination task Brief intro to signal detection theory: Your ability to perform a detection/discrimination task is limited by internal noise. …

[PDF] Elements of psychophysical theory Semantic Scholar

WebMar 30, 2015 · We now introduce our confidence signal detection (CSD, pronounced “kissed”) model, which combines a confidence function (Fig. 1D) with a standard signal … WebSignal Detection Theory. "Threshold" doesn't exist or is arbitrary. Unify detection and discrimination. Dice example or tumor detection example. Detectability. Outcomes: hit, … exterminators london ontario

Signal Detection Theory: 10 Examples and Definition

A psychometric function is an inferential psychometric model applied in detection and discrimination ... (yes), namely on "Hit" in Signal Detection Theory terminology. Second, and consequently, it is not bias free or criterion free. Third, the threshold is identified with the p(yes) = .5, which is just a conventional and … See more A psychometric function is an inferential psychometric model applied in detection and discrimination tasks. It models the relationship between a given feature of a physical stimulus, e.g. velocity, duration, brightness, weight … See more Depending on the number of choices, the psychophysical experimental paradigms classify as simple forced choice (also known as yes-no task), two-alternative forced choice (2AFC), and n-alternative forced choice. The number of alternatives in the experiment … See more A common example is visual acuity testing with an eye chart. The person sees symbols of different sizes (the size is the relevant physical stimulus parameter) and has to decide which … See more Two different types of psychometric plots are in common use: 1. Plot the percentage of correct responses (or a similar value) displayed on the y-axis and the physical parameter on the x-axis. If the stimulus parameter is very far towards one end of its … See more WebSignal Detection Theory, or SDT, ... A unique contribution to the SDT literature is the description of how SDT models can be fit to psychometric functions of proportion correct … WebMeasuring, Estimating, and Understanding the Psychometric Function: a Commentary; A Primer of Signal Detection Theory; Signal Detection Theory Measurement of Pain: a … exterminators long beach ca