Which neurotransmitter is widely believed to play the most critical role in the pathology of Parkinsonâs disease (PD)? How is this disease currently treated and what is a limitation the most common treatments?
Sample Solution
3) testing for significance the relationship between mediator (i.e. LMX) and dependent variable (i.e. psychological safety) when controlling for the independent variable (i.e. transformational, respectively transactional, leadership); 4) assessing whether the relation between the independent variable (i.e. transformational, respectively transactional, leadership) and the dependent varible (i.e. psychological safety) is weaker when the mediator (i.e. LMX) is added (MacKinnon, Cheong, & Pirlott, 2012). Validity and reliability Validity consists in measurement assessing what is intended to be assessed for the aim of the research (Field, 2009). In order to achieve internal validity, data collection instrument used previously validated scales for transactional leadership, transformational leadership, Leader-Member exchange, psychological safety. Added to this, factor analysis will be performed. For ensuring external validity, the demographic variables of the study sample will be compared with the demographics of other Dutch hospitals. Reliability represents data collection instrumentâs capability of producing similar results under different contexts with similar characteristics (Field, 2009). Cronbachâs alpha will be computed for evaluating the reliability of the scales used in this research; a value of minimum .7 will be accepted.>
3) testing for significance the relationship between mediator (i.e. LMX) and dependent variable (i.e. psychological safety) when controlling for the independent variable (i.e. transformational, respectively transactional, leadership); 4) assessing whether the relation between the independent variable (i.e. transformational, respectively transactional, leadership) and the dependent varible (i.e. psychological safety) is weaker when the mediator (i.e. LMX) is added (MacKinnon, Cheong, & Pirlott, 2012). Validity and reliability Validity consists in measurement assessing what is intended to be assessed for the aim of the research (Field, 2009). In order to achieve internal validity, data collection instrument used previously validated scales for transactional leadership, transformational leadership, Leader-Member exchange, psychological safety. Added to this, factor analysis will be performed. For ensuring external validity, the demographic variables of the study sample will be compared with the demographics of other Dutch hospitals. Reliability represents data collection instrumentâs capability of producing similar results under different contexts with similar characteristics (Field, 2009). Cronbachâs alpha will be computed for evaluating the reliability of the scales used in this research; a value of minimum .7 will be accepted.>
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