Quasi experiments can be carried out in artificial or natural settings. In these experiments the researcher has no control over the IV, but instead must choose a variable that is naturally occurring within the participant and then test the effect it has on the DV. The experimenter still manipulates the IV and tests the effect on the DV, but the researcher has no control over extraneous variables. The researcher identifies the different types of people that make up the target population and works out the proportions needed for the sample to be representative.Ī scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact by investigating the change of an IV and how it has an effect on the DVĪn experiment conducted under highly controlled conditions to investigate the effect that the change of an IV has on the DVĪn experiment carried out in the everyday environment (i.e. Participants are selected based on who is available at the time and willing to participate. For example, if 200 University students out of 2000 were required for a study, every 10 th student from the University list/register would be selected. Participants of the study are selected in a logical way from a target population. Each group takes part in a different condition of the IV.Ī person that takes part in the experiment or study.Ī confederate is an actor who participates in an experiment as a subject along with the other participant(s).Ī section of the population that is used to represent the group as a whole.Įach participant of the study/experiment have an equal chance of being included in the sample. There are equal groups where participants are matched based on certain characteristics e.g. Where each participant is assigned to more than one condition of the IV Where each participant is only assigned to one condition of the IV. The way you decide how to group your participants The process of planning a study to meet specified objectives. Changes).Ī DV is the variable which is measured by the experimenter after they have manipulated the IV.Įxtraneous variables are other variables (not the IV) which could affect the results of the experiment e.g. The variable/s the experimenter manipulates (i.e. Variables are generally used in psychology experiments to determine if changes to one thing result in changes to another. The null hypothesis states that there is no relationship between the IV and DV.Ī one-tailed directional hypothesis predicts the nature of the effect of the IV on the DV.Ī two-tailed non-directional hypothesis predicts that the IV will have an effect on the DV, but the direction of the effect is not specified.Ī variable is something that can be changed or varied, such as a characteristic or value. The alternative hypothesis states that there is a relationship between the IV and the DV. An aim identifies the purpose of the investigation.Ī hypothesis (plural hypotheses) is a precise, testable statement of what the researchers predict/s will be the outcome of the study.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |