Types of Studies
Researches cannot add in any treatments in this study, only collect data.
What is an observational study?
The concept of keeping as many other factors as possible.
What is control?
The individuals tested on in an experiment.
What are experimental units?
This variable was not intentionally part of the experiment but it contributed to the results.
What is the lurking variable?
In this study, you simply randomly assign treatments without separating the group any further.
What is a completely randomized study?
The principle for comparing things like study time or medication given.
What is comparison?
This explains the outcomes.
What is a factor?
The step in all the experimental designs is key to reduce bias.
What is random assignment?
This study takes two similar participants and assigns them a different treatment to reduce variability.
What is a matched pair design?
The idea that there needs to be a certain number of experimental units in a trial to reduce the effects of variability.
What is replication?
The specific values assigned to each group.
What are levels?
The process of not telling either the subject or researcher the treatment to reduce bias.
What is single- blind?
This type of design is thought to reduce bias the most out of any of the designs.
What is a matched pair design?
This is meant to reduce variability between groups and includes things like drawing names out of a hat.
What is Random sampling?
Humans on which an experiment is done.
What are subjects?
The idea that factors in addition to those being studied influence the final results.
What is confounding?
This design randomly assigns the treatment last according to its outline.
What is the randomized block design?
The effect that having these principles has on experimental data.
What is reducing bias?
The conditions applied in the experiment.
What are treatments?
Patients perceiving a change in condition based on the belief the treatment works.
What is the placebo effect?