TY  - GEN
A1  - Kliegl, Reinhold
A1  - Wei, Ping
A1  - Dambacher, Michael
A1  - Yan, Ming
A1  - Zhou, Xiaolin
T1  - Experimental effects and individual differences in linear mixed models: Estimating the relationship between spatial, object, and attraction effects in visual attention
N2  - Linear mixed models (LMMs) provide a still underused methodological perspective on combining experimental and individual-differences research. Here we illustrate this approach with two-rectangle cueing in visual attention (Egly et al., 1994). We replicated previous experimental cue-validity effects relating to a spatial shift of attention within an object (spatial effect), to attention switch between objects (object effect), and to the attraction of attention toward the display centroid (attraction effect), also taking into account the design-inherent imbalance of valid and other trials. We simultaneously estimated variance/covariance components of subject-related random effects for these spatial, object, and attraction effects in addition to their mean reaction times (RTs). The spatial effect showed a strong positive correlation with mean RT and a strong negative correlation with the attraction effect. The analysis of individual differences suggests that slow subjects engage attention more strongly at the cued location than fast subjects. We compare this joint LMM analysis of experimental effects and associated subject-related variances and correlations with two frequently used alternative statistical procedures
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - paper 236 
KW  - linear mixed model
KW  - individual differences
KW  - visual attention
KW  - spatial attention
KW  - object-based attention
Y1  - 2011
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus-56859
ER  - 
TY  - GEN
A1  - Pan, Jinger
A1  - Yan, Ming
A1  - Laubrock, Jochen
T1  - Perceptual Span in Oral Reading
BT  - The Case of Chinese
N2  - The present study explores the perceptual span, that is, the physical extent of
the area from which useful visual information is obtained during a single
fixation, during oral reading of Chinese sentences. Characters outside a
window of legible text were replaced by visually similar characters. Results
show that the influence of window size on the perceptual span was consistent
across different fixation and oculomotor measures. To maintain normal
reading behavior when reading aloud, it was necessary to have information
provided from three characters to the right of the fixation. Together with
findings from previous research, our findings suggest that the physical size of
the perceptual span is smaller when reading aloud than in silent reading. This
is in agreement with previous studies in English, suggesting that the mechanisms
causing the reduced span in oral reading have a common base that
generalizes across languages and writing systems.
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 320 
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-395270
ER  -