Open Access. Powered by Scholars. Published by Universities.®

Psychology Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 1 - 4 of 4

Full-Text Articles in Psychology

Memory Perception And Strategy Use In Parkinson's Disease, Andrew Johnson, Carrie Pollard, Philip Vernon, Jennifer Tomes, Mandar Jog Feb 2005

Memory Perception And Strategy Use In Parkinson's Disease, Andrew Johnson, Carrie Pollard, Philip Vernon, Jennifer Tomes, Mandar Jog

Andrew M. Johnson

Although there is growing support for the existence of memory deficits within Parkinson's disease (PD), little has been done to evaluate the extent to which PD patients demonstrate differences in their use of metacognitive strategies. In the present study, 79 PD patients (46 men and 33 women) and 49 age-matched healthy participants (19 men and 30 women) were compared on a metamemory questionnaire. PD patients reported significantly less strategy-use than age-matched controls, particularly with regards to external memory strategies (such as making lists). This suggests that auxiliary treatments such as memory strategy training might be effective in this population.


Brain Nerve Conduction Velocity Is A Valid And Useful Construct For Studying Human Cognitive Abilities: A Reply To Saint-Amour Et Al, Andrew Johnson, T. Reed, Philip Vernon Dec 2004

Brain Nerve Conduction Velocity Is A Valid And Useful Construct For Studying Human Cognitive Abilities: A Reply To Saint-Amour Et Al, Andrew Johnson, T. Reed, Philip Vernon

Andrew M. Johnson

No abstract provided.


A Role Of The Basal Ganglia In Movement: The Effect Of Precues On Discrete Bi-Directional Movements In Parkinson's Disease, Andrew Johnson, Philip Vernon, Quincy Almeida, Linda Grantier, Mandar Jog Dec 2002

A Role Of The Basal Ganglia In Movement: The Effect Of Precues On Discrete Bi-Directional Movements In Parkinson's Disease, Andrew Johnson, Philip Vernon, Quincy Almeida, Linda Grantier, Mandar Jog

Andrew M. Johnson

The effect of a precue on improving movement initiation (i.e., reaction time; RT) is well understood, whereas its influence on movement execution (i.e., movement time; MT) has rarely been examined. The current study investigated the influence of a directional precue (i.e., left vs. right) on the RT and MT of simple and discrete bi-directional movements in a large sample of Parkinson's disease patients and healthy control participants. Both patients and controls were tested twice, with testing sessions separated by 2 hours. Patients were tested first following an overnight levodopa withdrawal and again after they had taken their medication. Both patients …


Age And Neuropsychological Status Following Exposure To Violent Nonimpact Acceleration Forces In Mvas, James Sweeney, Andrew Johnson Dec 2000

Age And Neuropsychological Status Following Exposure To Violent Nonimpact Acceleration Forces In Mvas, James Sweeney, Andrew Johnson

Andrew M. Johnson

Performance on the Halstead-ReitanNeuropsychological Test Battery (HRB) was analyzed for 33 ind viduals, aged 20 to 69, who had been subjected to violent aceeleration forces in motor vehicle accidents . Age was considered as a continuous variable and correlated with single and compos ite HRB measures. With the one exception of the Left Neuropsychological Deficit Scale (NDS) score, agere lated de cline was consistently demonstrated by com positeHRB scores (i.e., Gen eralNDS, Right NDS, Level of Performance NDS, Pathognomonic SignNDS, Pattern NDS, Right-Left Differ enceNDS, and Halstead Impairment Index). In contrast, most single non-composite HRB measures did not refleet a …