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What does the term psychometrics mean?
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A type of psychometric test is ability. What do these measure?
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Measures of skill (speed, accuracy, IQ)
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Measures of traits (temperament, disposition)
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Measures of reinforcers
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Measures of schedules
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If a measure is reliable, it will give ______________ scores when you take the measurement again
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different
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similar
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contrasting
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alternative
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What does a true score reflect?
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The persons genuine ability, characteristic or potential
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The persons predicted ability
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The persons average ability
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The persons conscious beliefs
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Reliability is determined by...
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If the test is not valid, it will not...
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Allow accurate identification
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Measure the intended construct
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Predict behavior adequately
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All of the answers
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An alpha coefficient of ________ is considered reliable.
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When conducting an Exploratory Factor Analysis....
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Assume a given factor structure
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Examines whether the data fit the pre- specified factor structure
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You don’t make any assumptions about the underlying structure of the measure
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You look at extraneous reinforcement
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What is an overall definition of a T-test?
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Looking at differences in the Mean of two groups in relation to the Variance of the groups
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Looking at differences in the Standard deviation of two groups in relation to the Variance of the groups
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Looking at differences in the error of two groups in relation to the Variance of the groups
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None of the answers
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How do you calculate Variance σ2?
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Calculate the deviation of each score from the mean
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Calculate the standard error of each score from the mean
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Calculate the sums of squares score from the mean
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Square root the standard error
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Standard Error is the term used to describe ...
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the Standard Deviation of a number of sample means
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the mean of a number of sample means
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the error of a number of sample means
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None of the answers
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To find the critical value you need...
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When using an independent samples t....
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participants provide one data point
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participants provide more than one data point
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individual data points but we match pairs from each group on important variables
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Every participant takes part in all the levels of the independent variable
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Average Error is also known as...
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Variance
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Standard deviations
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Square roots
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Squared variance
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Which of the following is NOT an example of predictive validity?
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A questionnaire measure of enjoyment of social interactions correlates negatively with clinician-rated symptoms of social-anxiety
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People who take more risks on a task designed to measure impulsive risk taking also use illegal substances more often.
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People’s scores on two different self-report measures of depression are similar across multiple time points.
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A questionnaire measure of schizophrenia symptoms distinguishes between people diagnosed with schizophrenia and people diagnosed with bipolar disorder
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A matched pairs design refers to which of the following...
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All participants receive all levels of each condition
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Data is collected from two individuals that has been matched based on their score for the dependent variable.
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Data is collected from one individual but it is collected across two timepoints.
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Data is collected from two individuals, but matched on variables that are important for the study
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If two variables are “co-related”, which of the following can you NOT say about their relationship?
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Scores on variable A can be used to predict scores on variable B
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There is a statistical relationship between variables A and B.
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Variable A is responsible for causing changes in variable B.
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Variable C may influence the relationship between variables A and B
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Which of the following is incorrect when considering Thematic Analysis?
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The top down approach starts with a theme in mind, and the data is organised accordingly.
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The bottom up approach works from the data up, allowing themes to emerge.
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A hybrid of top-down and bottom up approaches are commonly used.
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None of the answers
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What is the intercept in this table?
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What do ontological perspectives look at?
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Reflexivity is the process of critically reflecting on the knowledge we produce. Which of the following does reflexivity do?
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A correlation of .7 was found between time spent studying and percentage on an exam. What is the proportion of variance in exam scores that can be explained by time spent studying?
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If Pearson’s correlation coefficient between stress level and workload is .8, how much variance in stress level is not accounted for by workload?
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What was the first standardised test?
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What is the difference between an experimental design and a quasi experimental design?
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experimental designs are not random, whereas quasi-experimental is
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quasi-experimental designs are not random, whereas experimental is
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neither of the designs use random allocation
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experimental designs are more scientific than quasi-experimental
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We want a ______ difference and a _______ amount of error to give us a more significant T
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The _________ overlap between the distributions, the more likely you are to find statistically significant differences.
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more
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less
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neither of the answers
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Partial Correlation controls for.....
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the effect of a third variable (or more) on both variables
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the correlation between two variables
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uses both a correlation and a t-test
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uses both a correlation and regression
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intonation is variation of spoken ______
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pitch
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tone
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language
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discourse
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1st order: Descriptive level coding