Keyword search (3,448 papers available)


Everyday activity parameters and competence in older adults.

Author(s): Pushkar D, Arbuckle T, Conway M, Chaikelson J, Maag U

Psychol Aging. 1997 Dec;12(4):600-9 Authors: Pushkar D, Arbuckle T, Conway M, Chaikelson J, Maag U

Article GUID: 9416629
Individual differences in trajectory of intellectual development over 45 years of adulthood.

Author(s): Arbuckle TY, Maag U, Pushkar D, Chaikelson JS

Psychol Aging. 1998 Dec;13(4):663-75 Authors: Arbuckle TY, Maag U, Pushkar D, Chaikelson JS

Article GUID: 9883465
Social behavior and off-target verbosity in elderly people.

Author(s): Pushkar D, Basevitz P, Arbuckle T, Nohara-LeClair M, Lapidus S, Peled M

Psychol Aging. 2000 Jun;15(2):361-74 Authors: Pushkar D, Basevitz P, Arbuckle T, Nohara-LeClair M, Lapidus S, Peled M

Article GUID: 10879589
Effect of off-target verbosity on communication efficiency in a referential communication task.

Author(s): Arbuckle TY, Nohara-LeClair M, Pushkar D

Psychol Aging. 2000 Mar;15(1):65-77 Authors: Arbuckle TY, Nohara-LeClair M, Pushkar D

Article GUID: 10755290
Motivation, personality and well-being in older volunteers.

Author(s): Pushkar D, Reis M, Morros M

Int J Aging Hum Dev. 2002;55(2):141-62 Authors: Pushkar D, Reis M, Morros M

Article GUID: 12513036
Off-target verbosity, everyday competence, and subjective well-being.

Author(s): Arbuckle TY, Pushkar D, Bourgeois S, Bonneville L

Gerontology. 2004 Sep-Oct;50(5):291-7 Authors: Arbuckle TY, Pushkar D, Bourgeois S, Bonneville L

Article GUID: 15331857
Behavioural and electrophysiological measures of task switching during single and mixed-task conditions.

Author(s): Goffaux P, Phillips NA, Sinai M, Pushkar D

Biol Psychol. 2006 Jun;72(3):278-90 Authors: Goffaux P, Phillips NA, Sinai M, Pushkar D

Article GUID: 16413655
Autobiographical memory specificity predicts social problem-solving ability in old and young adults.

Author(s): Beaman A, Pushkar D, Etezadi S, Bye D, Conway M

Q J Exp Psychol (Hove). 2007 Sep;60(9):1275-88 Authors: Beaman A, Pushkar D, Etezadi S, Bye D, Conway M

Article GUID: 17676558
Neurophysiological measures of task-set switching: effects of working memory and aging.

Author(s): Goffaux P, Phillips NA, Sinai M, Pushkar D

J Gerontol B Psychol Sci Soc Sci. 2008 Mar;63(2):P57-66 Authors: Goffaux P, Phillips NA, Sinai M, Pushkar D

Article GUID: 18441266
Testing continuity and activity variables as predictors of positive and negative affect in retirement.

Author(s): Pushkar D, Chaikelson J, Conway M, Etezadi J, Giannopoulus C, Li K, Wrosch C

J Gerontol B Psychol Sci Soc Sci. 2010 Jan;65B(1):42-9 Authors: Pushkar D, Chaikelson J, Conway M, Etezadi J, Giannopoulus C, Li K, Wrosch C

Article GUID: 19875749
Longitudinal associations of need for cognition, cognitive activity, and depressive symptomatology with cognitive function in recent retirees.

Author(s): Baer LH, Tabri N, Blair M, Bye D, Li KZ, Pushkar D

J Gerontol B Psychol Sci Soc Sci. 2013 Sep;68(5):655-64 Authors: Baer LH, Tabri N, Blair M, Bye D, Li KZ, Pushkar D

Article GUID: 23213060
Title:Behavioural and electrophysiological measures of task switching during single and mixed-task conditions.
Authors:Goffaux P,  Phillips NA,  Sinai M,  Pushkar D
Link:https://www.ncbi.nlm.nih.gov/pubmed/16413655?dopt=Abstract
Category:Biol Psychol
PMID:16413655
Dept Affiliation: PSYCHOLOGY
1 Centre for Research in Human Development, Department of Psychology, Concordia University, 7141 Sherbrooke Street West, Montreal, Que., Canada H4B 1R6.

Description:

Behavioural and electrophysiological measures of task switching during single and mixed-task conditions.

Biol Psychol. 2006 Jun;72(3):278-90

Authors: Goffaux P, Phillips NA, Sinai M, Pushkar D

Abstract

In order to understand how the brain prepares for and executes a switch in task demand, we measured reaction time (RT), accuracy, and event-related brain potentials associated with performance in single and mixed-task blocks using a cued design. Our results show that trials which repeat in a mixed-task block (repeat trials) were more demanding than trials which repeated in a single-task block, as reflected by the presence of a RT mixing cost and by the presence of a smaller target-locked positivity (P3b) on repeat trials. Within a mixed-task block, repeat and switch trials also differed, where repeat trials showed evidence of greater preparation (larger cue-locked negativity), more efficient target processing (larger target-locked P3b), and shorter RTs. In addition, the cue-locked negativity difference remained despite equating repeat and switch trials on RT, suggesting that this negativity difference is specific to the switching process. Our results are discussed in light of existing models of task switching.

PMID: 16413655 [PubMed - indexed for MEDLINE]