TY  - GEN
A1  - Krause, Florian
A1  - Bekkering, Harold
A1  - Pratt, Jay
A1  - Lindemann, Oliver
T1  - Interaction between numbers and size during visual search
T2  - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe
N2  - The current study investigates an interaction between numbers and physical size (i.e. size congruity) in visual search. In three experiments, participants had to detect a physically large (or small) target item among physically small (or large) distractors in a search task comprising single-digit numbers. The relative numerical size of the digits was varied, such that the target item was either among the numerically large or small numbers in the search display and the relation between numerical and physical size was either congruent or incongruent. Perceptual differences of the stimuli were controlled by a condition in which participants had to search for a differently coloured target item with the same physical size and by the usage of LCD-style numbers that were matched in visual similarity by shape transformations. The results of all three experiments consistently revealed that detecting a physically large target item is significantly faster when the numerical size of the target item is large as well (congruent), compared to when it is small (incongruent). This novel finding of a size congruity effect in visual search demonstrates an interaction between numerical and physical size in an experimental setting beyond typically used binary comparison tasks, and provides important new evidence for the notion of shared cognitive codes for numbers and sensorimotor magnitudes. Theoretical consequences for recent models on attention, magnitude representation and their interactions are discussed.
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 623 
KW  - visual search
KW  - congruity effect
KW  - physical size
KW  - small target
KW  - semantic distance
Y1  - 2020
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-435442
SN  - 1866-8364
IS  - 623
SP  - 664
EP  - 677
ER  - 
TY  - JOUR
A1  - Schwarz, Wolfgang
A1  - Miller, Jeff
T1  - GSDT: An Integrative Model of Visual Search
JF  - Journal of experimental psychology : Human perception and performance
N2  - We present a new quantitative process model (GSDT) of visual search that seeks to integrate various processing mechanisms suggested by previous studies within a single, coherent conceptual frame. It incorporates and combines 4 distinct model components: guidance (G), a serial (S) item inspection process, diffusion (D) modeling of individual item inspections, and a strategic termination (T) rule. For this model, we derive explicit closed-form results for response probability and mean search time (reaction time [RT]) as a function of display size and target presence/absence. The fit of the model is compared in detail to data from 4 visual search experiments in which the effects of target/distractor discriminability and of target prevalence on performance (present/absent display size functions for mean RT and error rate) are studied. We describe how GSDT accounts for various detailed features of our results such as the probabilities of hits and correct rejections and their mean RTs; we also apply the model to explain further aspects of the data, such as RT variance and mean miss RT.
KW  - visual search
KW  - signal prevalence
KW  - strategic termination
KW  - diffusion model
KW  - display size effect
Y1  - 2016
U6  - https://doi.org/10.1037/xhp0000247
SN  - 0096-1523
SN  - 1939-1277
VL  - 42
SP  - 1654
EP  - 1671
PB  - American Psychological Association
CY  - Washington
ER  -