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@ARTICLE{PaasOliveros:972039,
author = {Paas Oliveros, Lya K. and Pieczykolan, Aleks and Pläschke,
Rachel N. and Eickhoff, Simon B. and Langner, Robert},
title = {{R}esponse-code conflict in dual-task interference and its
modulation by age},
journal = {Psychological research},
volume = {87},
number = {1},
issn = {0033-3026},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2023-01048},
pages = {260 - 280},
year = {2023},
abstract = {Difficulties in performing two tasks at once can arise from
several sources and usually increase in advanced age. Tasks
with concurrent bimodal (e.g., manual and oculomotor)
responding to single stimuli consistently revealed crosstalk
between conflicting response codes as a relevant source.
However, how this finding translates to unimodal (i.e.,
manual only) response settings and how it is affected by age
remains open. To address this issue, we had young and older
adults respond to high- or low-pitched tones with one
(single task) or both hands concurrently (dual task).
Responses were either compatible or incompatible with the
pitch. When responses with the same level of compatibility
were combined in dual-task conditions, their response codes
were congruent to each other, whereas combining a compatible
and an incompatible response created mutually incongruent
(i.e., conflicting) response codes, potentially inducing
detrimental crosstalk. Across age groups, dual-task costs
indeed were overall highest with response-code incongruency.
In these trials, compatible responses exhibited higher costs
than incompatible ones, even after removing trials with
strongly synchronized responses. This underadditive cost
asymmetry argues against mutual crosstalk as the sole source
of interference and corroborates notions of strategic
prioritization of limited processing capacity based on
mapping-selection difficulty. As expected, the effects of
incongruent response codes were found to be especially
deleterious in older adults, supporting assumptions of
age-related deficits in multiple-action control at the level
of task-shielding. Overall, our results suggest that aging
is linked to higher response confusability and less
efficient flexibility for capacity sharing in dual-task
settings.},
cin = {INM-7},
ddc = {150},
cid = {I:(DE-Juel1)INM-7-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525)},
pid = {G:(DE-HGF)POF4-5251},
typ = {PUB:(DE-HGF)16},
pubmed = {35122495},
UT = {WOS:000751579100001},
doi = {10.1007/s00426-021-01639-7},
url = {https://juser.fz-juelich.de/record/972039},
}