A
Mr. And Mrs. Losterich have six children aged 5,6,6,7,8,16. the mean age of the Klostreich children is
8
Replication involves
repeating an earlier research study
A sample that has participants volunteer to participate in a sample is called
a volunteer sample
which of following correlation coefficients express the stronger degree of relationships between two variables
.97
describing the general nature of the experiment in advanced, including any potential risk is called giving
informed consent
The IQ scores of the five members of the Duluth family are 100,82,104,96,118. What is the range?
36
Validity involves
testing what we claim to be testing by utilizing controls
a sample that uses that people who are around at the time are called
an opportunity sample
What is a directional hypothesis
it is a hypothesis that states which way you think the results are going to go
developmental psychologists want to know if exposing children to TV improves reading skills. the IV is
exposure to tv
A clinical psychologist carefully investigated his client's history by asking questions. What research method did he most likely use
Survey
A specification of the procedures used to describe or measure a variable is
an operational variable
a participant who deceives participants at the start need to fully inform them of the true nature at the end. this is called
debriefing
what is a nondirectional hypothesis
Does not specify the type of change or relationship that is expected to occur
what are the benefits of using opportunity and volunteer sampling
it is easy for the researcher to get participants
naturalistic observation
in the hypothesis, "students who study in the morning will recall more than those who study at night." the independent variable is
A _____ is a testable prediction that gives direction to research
hypothesis
What are examples of problems with surveys
people lie, wording can affect answers, there can be irrelevant or inconsistent choices
When looking at a correlation, if one variable increases while the other decreases, that is called a _______ correlation
negative
When observed difference between the means of an experimental group and control group are not due to chance, we conclude
it is valid
in the hypothesis "students who study in the morning will recall more than those who study at night." the dependent variable is
the number of terms remembered
A social psychologist wants to know whether being polite or rude to make them more cooperative. What is the IV?
politeness or rudeness
a random sample is going to be more generalizable because
everybody has an equal chance of being included
when looking at a correlation, if one variable decreases, while the other variable decreases, it is called a ________ correlation
positive