What does the term psychometrics mean?
Psychological measurement
Physiological experiments
A set of matrices
A form of drug therapy
A type of psychometric test is ability. What do these measure?
Measures of skill (speed, accuracy, IQ)
Measures of traits (temperament, disposition)
Measures of reinforcers
Measures of schedules
If a measure is reliable, it will give ______________ scores when you take the measurement again
different
similar
contrasting
alternative
What does a true score reflect?
The persons genuine ability, characteristic or potential
The persons predicted ability
The persons average ability
The persons conscious beliefs
Reliability is determined by...
how much error variance is in the measurement
how many accurate responses an individual gives
the standard deviation
the squared variance
If the test is not valid, it will not...
Allow accurate identification
Measure the intended construct
Predict behavior adequately
All of the answers
An alpha coefficient of ________ is considered reliable.
.60
>.70
<.60
.55
When conducting an Exploratory Factor Analysis....
Assume a given factor structure
Examines whether the data fit the pre- specified factor structure
You don’t make any assumptions about the underlying structure of the measure
You look at extraneous reinforcement
What is an overall definition of a T-test?
Looking at differences in the Mean of two groups in relation to the Variance of the groups
Looking at differences in the Standard deviation of two groups in relation to the Variance of the groups
Looking at differences in the error of two groups in relation to the Variance of the groups
None of the answers
How do you calculate Variance σ2?
Calculate the deviation of each score from the mean
Calculate the standard error of each score from the mean
Calculate the sums of squares score from the mean
Square root the standard error
Standard Error is the term used to describe ...
the Standard Deviation of a number of sample means
the mean of a number of sample means
the error of a number of sample means
To find the critical value you need...
The alpha level (usually α=.05)
The degrees of freedom
Whether the test is 1 or 2 tailed
When using an independent samples t....
participants provide one data point
participants provide more than one data point
individual data points but we match pairs from each group on important variables
Every participant takes part in all the levels of the independent variable
Average Error is also known as...
Variance
Standard deviations
Square roots
Squared variance
Which of the following is NOT an example of predictive validity?
A questionnaire measure of enjoyment of social interactions correlates negatively with clinician-rated symptoms of social-anxiety
People who take more risks on a task designed to measure impulsive risk taking also use illegal substances more often.
People’s scores on two different self-report measures of depression are similar across multiple time points.
A questionnaire measure of schizophrenia symptoms distinguishes between people diagnosed with schizophrenia and people diagnosed with bipolar disorder
A matched pairs design refers to which of the following...
All participants receive all levels of each condition
Data is collected from two individuals that has been matched based on their score for the dependent variable.
Data is collected from one individual but it is collected across two timepoints.
Data is collected from two individuals, but matched on variables that are important for the study
If two variables are “co-related”, which of the following can you NOT say about their relationship?
Scores on variable A can be used to predict scores on variable B
There is a statistical relationship between variables A and B.
Variable A is responsible for causing changes in variable B.
Variable C may influence the relationship between variables A and B
Which of the following is incorrect when considering Thematic Analysis?
The top down approach starts with a theme in mind, and the data is organised accordingly.
The bottom up approach works from the data up, allowing themes to emerge.
A hybrid of top-down and bottom up approaches are commonly used.
What is the intercept in this table?
(constant) -26.61
(advertising budget) .09
(no. of plays on the radio) 3.37
(attractiveness of band) 11.09
What do ontological perspectives look at?
A half-way house
the world and our interpretation of it
eyes or something?
Other peoples perspectives on our existence
Reflexivity is the process of critically reflecting on the knowledge we produce. Which of the following does reflexivity do?
Attempts to counter the issue of subjectivity
Brings the researcher into the research
Part of quality control
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?
.7
.49
.3
.70
If Pearson’s correlation coefficient between stress level and workload is .8, how much variance in stress level is not accounted for by workload?
20%
2%
8%
36%
What was the first standardised test?
Rorschach
Binet & Simon test of Intelligence
TAT
Cattell's 16pf
What is the difference between an experimental design and a quasi experimental design?
experimental designs are not random, whereas quasi-experimental is
quasi-experimental designs are not random, whereas experimental is
neither of the designs use random allocation
experimental designs are more scientific than quasi-experimental
We want a ______ difference and a _______ amount of error to give us a more significant T
large, small
small, large
average, average
minus value, positive value
The _________ overlap between the distributions, the more likely you are to find statistically significant differences.
more
less
neither of the answers
Partial Correlation controls for.....
the effect of a third variable (or more) on both variables
the correlation between two variables
uses both a correlation and a t-test
uses both a correlation and regression
intonation is variation of spoken ______
pitch
tone
language
discourse
1st order: Descriptive level coding
Minimal interpretation
Often requires revision
Words to describe a chunk of text
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