Related Experiment Video
Updated: Aug 12, 2026
07:34
Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
Published on: June 3, 2013
Informational masking in profile analysis: comparing ideal and human observers
1Department of Psychology, University of Pennsylvania, Philadelphia 19104, USA. richards@psych.upenn.edu
Journal of the Association for Research in Otolaryngology : JARO
|October 24, 2001
Summary
Ideal observer models accurately predict human hearing thresholds with fixed sound profiles. However, they underestimate the impact of frequency and amplitude uncertainty on human auditory perception.
Area of Science:
- Auditory perception
- Psychoacoustics
- Ideal observer models
Background:
- Ideal observer models reasonably predict human thresholds when auditory profile components are fixed.
- Previous research indicates limitations when frequency or amplitude varies.
Purpose of the Study:
- To compare ideal observer model predictions with human thresholds in profile analysis tasks.
- To investigate the effects of frequency and amplitude uncertainty on auditory perception.
Main Methods:
- Comparison of ideal observer model predictions against human psychophysical thresholds.
- Analysis of profile analysis tasks involving fixed and randomized frequencies/amplitudes.
Main Results:
- Ideal observer models align with human thresholds for fixed auditory profiles.
- Significant deviations observed when frequency uncertainty increases, partly due to interobserver variability.
- Ideal observer models fail to predict thresholds in amplitude randomization experiments.
Conclusions:
- Ideal observer models do not fully account for the impact of uncertainty in auditory profile analysis.
- The model underestimates the effect of uncertainty on human auditory thresholds compared to experimental findings.
Related Concept Videos
02:13The Representativeness Heuristic
The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.
01:12Hindsight Biases
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
02:16Stereotype Content Model
The Stereotype Content Model (SCM) was first proposed by Susan Fiske and her colleagues (Fiske, Cuddy, Glick & Xu, 2002; see also Fiske, 2012 and Fiske, 2017). The SCM specifies that when someone encounters a new group, they will stereotype them based on two metrics: warmth—or that group’s perceived intent, and how likely they are to provide help or inflict harm—and competence—or their ability to carry out that objective. Depending on the warmth-competence categorization, a person will feel...
01:23Actor-Observer Effect
The actor-observer effect, a cognitive bias closely linked to the fundamental attribution error, refers to the tendency for individuals to attribute their behavior to external, situational factors while explaining others’ behavior in terms of internal, dispositional traits. This asymmetry in attribution significantly influences social perception and judgment.Cognitive Mechanisms Behind the EffectTwo primary psychological mechanisms contribute to the actor-observer effect: differences in visual...
01:27Halo Effect
The halo effect is a cognitive bias in which an individual's overall impression influences judgments about their specific traits. This psychological phenomenon leads people to associate positive characteristics with those they perceive as generally good and negative characteristics with those they view as bad. This effect is particularly influential in social perception, professional evaluations, and decision-making processes.The Psychological Basis of the Halo EffectThe halo effect is rooted...
01:23Implicit Personality Theories
Implicit personality theory explains how individuals make assumptions about the relationships between personality traits, behaviors, and character types. When people learn that someone possesses a particular trait, they tend to infer the presence of other related characteristics, forming a cohesive impression. This cognitive shortcut plays a crucial role in social interactions and interpersonal judgments.Central Traits and Their InfluenceSolomon Asch's seminal 1946 study highlighted the power...