Research Design
This sampling technique is used to obtain a representative sample in which each person in the population has an equal chance of being selected.
What is random sampling?
The mean of 1, 1, 7, 8, and 8.
What is 5?
Inferential statistics make guesses about this based on sample statistics.
What is a population?
Level of measurement (nominal, ordinal, interval, or ratio) implied when someone says "Molly is smarter than John."
What is an ordinal scale?
The Rorschach Test and the TAT are examples of this kind of test.
What is a projective test?
The name for a procedure that hides the independent variable from the participant AND the experimenter.
What is double-blinding?
The strongest of the following correlations: -.70, .00, +.20, +.65.
What is -.70?
A researcher used this statistic after she divided participants into two groups and told one group to exercise for 15 minutes, and the other group to rest for 15 minutes, and measured each participants' pulse rate.
What is the independent samples t-test?
A measurement that refers to the consistency with which the test measures whatever it measures.
What is reliability?
The opposite of objective: the reason a famous researcher named Robyn Dawes once advised people to "walk out of the clinician's office" if he or she wanted to test you with the Rorschach test.
What is subjective?
The type of research design that a teacher uses when he examines differences in learning outcomes of his 8:00 math class versus his 11:00 math class.
What is a quasi-experiment?
The mean is greater than the median in this type of distribution.
What is a skewed distribution?
Dr. Zen splits a sample into a placebo condition, a pain reliever condition, and an acupuncture condition to measure the effects of each level of the independent variable on pain associated with migraine headaches. To analyze these data, she uses this statistic.
What is ANOVA?
What a researcher would call a bathroom scale if it gave the same weight measurement for the same person every time, but the weight was always 5 pounds lighter than the person really is.
What is reliable, but not valid?
The MMPI is an example of this type of test.
What is a personality inventory?
Dr. Dusty uses this type of method to examine government records to study arrest rates among different races in different states.
What is archival analysis?
Another name for the average amount that scores differ from the mean.
What is the standard deviation?
The type of error that occurs when a false null hypothesis is accepted.
What is a Type II error?
Test-Retest? Alternative Forms? Inter-Rater?
The type of reliability when a test for self-efficacy is given to a group of people, and a similar version of the test is given to that same group a week later.
What is alternative forms reliability?
A 10 year old boy named Johnny has an IQ of 90, implying _____ is his mental age.
What is 9?
The design a developmental psychologist uses when she wants to compare the performance of children at different age levels.
What is a cross-sectional design?
A positively skewed distribution with a mean of 75.3 and a standard deviation of 20.15 will have this mean and standard after the scores are transformed to z scores.
What is a mean of 0, and a standard deviation of 1?
Increasing the sample size will increase the _____ of a statistical test - a synonym for authority in the political realm.
What is power?
A bias that can occur when a researcher hand picks who will participate in what condition of her study.
What is selection bias?
What the WAIS-IV measures.
What is intelligence?