Chapters 2 & 3: Personality Methods & Assessment Flashcards
Research
exploration of the unknown
finding out something that nobody knew before one discovered it
Funder’s Second Law
there are no perfect indicators of personality
there are only clues, and clues as always ambiguous
Funder’s Third Law
something beats nothing, two times out of three
S Data
self-judgements, or ratings that people provide of their own personality attributes or behavior
Face Validity
the degree to which an assessment instrument, such as a questionnaire, on its face appears to measure what it is intended to measure
for example, a face-valid measure of sociability might ask about attendance at parties
Self-Verification
the process by which people try to bring others to treat them in a manner that confirms their self-conceptions
I Data
informants’ data, or judgements made by knowledgeable informants about general attributes of an individual’s personality
Judgements
data that derive, in the final analysis, from someone using his or her common sense and observations to rate personality or behavior
Expectancy Effect
the tendency for someone to become the kind of person others expect him or her to be
also known as a self-fulfilling prophecy and behavioral confirmation
Behavioral Confirmation
the self-fulfilling prophecy tendency for a person to become the kind of person others expect them to be
also called the expectancy effect
L Data
life data, or more-or-less easily verifiable, concrete, real-life outcomes, which are of possible psychological significance
B Data
behavioral data, or direct observations of another’s behavior that are translated directly into numerical form
B data can be gathered in natural or contrived (experimental) settings
Reliability
in measurement, the tendency of an instrument to provide the same comparative information on repeated occasions
Measurement Error
the variation of a number around its true mean due to uncontrolled, essentially random influences
also called error variance
State
a temporary psychological event, such as an emotion, thought, or perception
Trait
a relatively stable and long-lasting attribute of personality
Aggregation
the combining together of different measurements, such as by averaging them
Spearman-Brown Formula
in psychometrics, a mathematical formula that predicts the degree to which the reliability of a test can be improved by adding more items
Psychometrics
the technology of psychological measurement
Validity
the degree to which a measurement actually reflects what it is intended to measure
Construct
an idea about a psychological attribute that goes beyond what might be assessed through any particular method of assessment
Construct Validation
the strategy of establishing the validity of a measure by comparing it with a wide range of other measures
Generalizability
the degree to which a measurement can be found under diverse circumstances, such as time, context, participant population, and so on
in modern psychometrics, this terms includes both reliability and validity
Case Method
studying a particular phenomenon or individual in depth both to understand the particular case and to discover general lessons or scientific laws
Experimental Method
a research technique that establishes the causal relationship between an independent variable (x) and dependent variable (y) by randomly assigning participants to experimental groups characterized by differing levels of x, and measuring the average behavior (y) that results in each group
Correlational Method
a research technique that establishes the relationship (not necessarily causal) between two variables, traditionally denoted x and y, by measuring both variables in a sample of participants
Scatter Plot
a diagram that shows the relationship between two variables by displaying points on a two-dimensional plot
usually the two variables are denoted x and y, each point represent a pair of scores, and the x variable is plotted on the horizontal axis while the y variable is plotted on the vertical axis
Correlation Coefficient
a number between -1 and +1 that reflects the degree to which one variable, traditionally called y, is a linear function of another, traditionally called x
a negative correlation means that as x goes up, y goes down
a positive correlation means that as x foes up, so does y
a zero correlation means that x and y are unrelated