PSY 420 Week One Class Notes
PSY 420 Week One Class Notes PSY420
Popular in Psychological Assessment
Popular in Psychology
This 2 page Class Notes was uploaded by Samantha Bishop on Saturday August 27, 2016. The Class Notes belongs to PSY420 at Lenoir-Rhyne University taught by Dr. Gordon Cappelletty in Fall 2016. Since its upload, it has received 9 views. For similar materials see Psychological Assessment in Psychology at Lenoir-Rhyne University.
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Date Created: 08/27/16
PSY 420 Week One Class Notes 8/23/16 Psychologists do assessments that answer a question dealing with a patient’s mental and emotional state. Theory drives assessment. Psychological test: objective and standardized measure of a sample of behavior. Let’s break it down: o Objectiveto not have a subjective bias o Standardized behavior, instruments, scoring are all fixed so that we can compare across time or people o Measure quantitative data (how much?) o Sample supplemental amount o Behavior anything a person does/says (oral, verbal, internal, physical, thoughts, feelings) Components of a psychological assessment: 1. Individual’s history & background 2. Behavioral observations 3. Psychological tests/instruments *All of these are focused on answering a question about an individual* 8/25/16 Basic Statistics Review Descriptive Statistics 1. Univariate 1 variable a. Central tendency b. Variance and standard deviation c. Distribution 2. Bivariate 2 variables a. Correlation 3. Multivariate more than 2 variables a. Multiple regression UNIVARIATE Central Tendency: Σx 1. Arithmetic mean sum divided by the total (most preferred average) N 2. Median halfway point 3. Mode most frequent occurring score Σ(x−mean) 2 Variance: s = N−1 √ s2 Standard Deviation: Skew a. Negative skew when the mean is lower than the median b. Positive skew when the mean is bigger than the median 68% of individuals are within one standard deviation of the mean BIVARIATE Correlation Coefficient: (co)variance =r geometricmean *if the r=0 then there is NO causal relationship between the two variables* Correlation range of 1.00 to +1.00 MULTIVARIATE Multiple Regression: R= overall relationship = individual contribution
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