Control is the way that experimenters try to minimize the effects of any other variables besides the IV and DV.

A double blind experiment is when neither the experimenter nor the subjects know which subjects are in the experimental and which are in the control group.

A single blind experiment is when the subjects do not know all of the information about the study while it is occurring, especially which group (experimental or control) they belong to.

Correlation is a number that describes the relationship between two variables.

Counterbalancing is when different sets of participants get all of the conditions of the study in different orders so that order effects are accounted for.

A double blind experiment is when neither the experimenter nor the subjects know which subjects are in the experimental and which are in the control group.

A single blind experiment is when the subjects do not know all of the information about the study while it is occurring, especially which group (experimental or control) they belong to.

Counterbalancing is when different sets of participants get all of the conditions of the study in different orders so that order effects are accounted for.

Control is the way that experimenters try to minimize the effects of any other variables besides the IV and DV.

Correlation is a number that describes the relationship between two variables.

Correlation is a number that describes the relationship between two variables.

A double blind experiment is when neither the experimenter nor the subjects know which subjects are in the experimental and which are in the control group.

A single blind experiment is when the subjects do not know all of the information about the study while it is occurring, especially which group (experimental or control) they belong to.

Control is the way that experimenters try to minimize the effects of any other variables besides the IV and DV.

Counterbalancing is when different sets of participants get all of the conditions of the study in different orders so that order effects are accounted for.

The distinction between basic and applied research does not have to do with the difficulty of the problem or to which branch of psychology it relates. Basic research is more theoretical and focused on understanding a phenomenon, whereas applied research is more focused on solving a real-world problem.

Basic research is more theoretical and focused on understanding a phenomenon, whereas applied research is more focused on solving a real-world problem. In the answer choices, the only issue that would immediately solve a real-world problem is "testing the efficacy of an educational program designed to raise the IQ scores of low-income students." Developing theories and understanding patterns are more characteristic of basic research.

A “variable” is described something that varies between people or objects—in this case, temperature and aggression are the variables. The “independent variable” (IV) is the variable that is manipulated by the researcher (temperature) and the “dependent variable” (DV) is the variable that changes as a result of a change in the IV (aggression). A “hypothesis” describes the relationship between variables and is generally what the researcher predicts will happen (i.e. “as the temperature in a room increases, a measure of the subject's aggression will increase as well”). Last, a “theory” is a principle or set of principles that explains a phenomenon.

A “variable” is described something that varies between people or objects—in this case, temperature and aggression are the variables. The “independent variable” (IV) is the variable that is manipulated by the researcher (temperature) and the “dependent variable” (DV) is the variable that changes as a result of a change in the IV (aggression). A “hypothesis” describes the relationship between variables and is generally what the researcher predicts will happen (i.e. “as the temperature in a room increases, a measure of the subject's aggression will increase as well”). Last, a “theory” is a principle or set of principles that explains a phenomenon.

A “variable” is described something that varies between people or objects—in this case, temperature and aggression are the variables. The “independent variable” (IV) is the variable that is manipulated by the researcher (temperature) and the “dependent variable” (DV) is the variable that changes as a result of a change in the IV (aggression). A “hypothesis” describes the relationship between variables and is generally what the researcher predicts will happen (i.e. “as the temperature in a room increases, a measure of the subject's aggression will increase as well”). Last, a “theory” is a principle or set of principles that explains a phenomenon.

A “variable” is described something that varies between people or objects—in this case, temperature and aggression are the variables. The “independent variable” (IV) is the variable that is manipulated by the researcher (temperature) and the “dependent variable” (DV) is the variable that changes as a result of a change in the IV (aggression). A “hypothesis” describes the relationship between variables and is generally what the researcher predicts will happen (i.e. “as the temperature in a room increases, a measure of the subject's aggression will increase as well”). Last, a “theory” is a principle or set of principles that explains a phenomenon.

Proving a hypothesis is actually impossible—we can only fail to disprove or add support for a hypothesis. Essentially, the closest we can get to "proving" a hypothesis is to not find evidence that contradicts it. This is because there could always be an exception to the hypothesis that we have not discovered.