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Full-Text Articles in Psychology
Memory Perception And Strategy Use In Parkinson's Disease, Andrew Johnson, Carrie Pollard, Philip Vernon, Jennifer Tomes, Mandar Jog
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.
Individual Differences In Multiple Dimensions Of Aggression: A Univariate And Multivariate Genetic Analysis, Philip Vernon, Julie Mccarthy, Andrew Johnson, Kerry Jang, Julie Harris
Individual Differences In Multiple Dimensions Of Aggression: A Univariate And Multivariate Genetic Analysis, Philip Vernon, Julie Mccarthy, Andrew Johnson, Kerry Jang, Julie Harris
Andrew M. Johnson
Previous behaviour genetic studies of aggression have yielded inconsistent results: reported heritabilities for different types of aggressive behaviour ranging from 0 to 0.98. In the present study, 247 adult twin pairs (183 MZ pairs; 64 same-sex DZ pairs) were administered seven self-report questionnaires which yielded 18 measures of aggression. Univariate genetic analyses showed moderate to high heritabilities for 14 of these 18 measures and for a general aggression factor and three correlated aggression factors extracted from the measures. Multivariate genetic analyses showed sizeable genetic correlations between the different dimensions of aggression. Thus, individual differences in many types of aggressive behaviour …
Nature Vs. Nurture: Are Leaders Born Or Made? A Behavior Genetic Investigation Of Leadership Style, Andrew Johnson, Philip Vernon, Julie Mccarthy, Mindy Molson, Julie Harris, Kerry Jang
Nature Vs. Nurture: Are Leaders Born Or Made? A Behavior Genetic Investigation Of Leadership Style, Andrew Johnson, Philip Vernon, Julie Mccarthy, Mindy Molson, Julie Harris, Kerry Jang
Andrew M. Johnson
With the recent resurgence in popularity of trait theories of leadership, it is timely to consider the genetic determination of the multiple factors comprising the leadership construct. Individual differences in personality traits have been found to be moderately to highly heritable, and so it follows that if there are reliable personality trait differences between leaders and non-leaders, then there may be a heritable component to these individual differences. Despite this connection between leadership and personality traits, however, there are no studies of the genetic basis of leadership using modern behavior genetic methodology. The present study proposes to address the lack …