Learn Before
Laboratory Experiment
A laboratory experiment is a research study conducted in a highly controlled environment. Because researchers can manipulate variables and minimize outside influences, laboratory experiments typically possess high internal validity, enabling researchers to draw strong causal conclusions.
0
1
Tags
KPU
Research Methods in Psychology - 4th American Edition @ KPU
Related
Types of Experimental Research
Basic Experimental Design Components
Interpreting Experimental Findings in Psychology
Reporting Research in Psychology
Weakness of Experimental Research: Artificial Settings
Ethical Constraints in Experimental Research
The Core Aim of Experimental Research
Primary Strength of Experimental Research: Establishing Causality
A researcher wants to test if a new note-taking strategy improves exam performance. They teach the new strategy to their morning class and the traditional strategy to their afternoon class. At the end of the unit, the morning class scores significantly higher on the exam. The researcher concludes that the new strategy causes better exam performance. Which of the following statements best analyzes the validity of this conclusion?
Falsifiability
Example of an Experiment: Lighting and Worker Productivity
Field Experiment
Experiment
Inability to Manipulate Variables
Experimental Record Keeping
Non-Experimental Research
Quasi-Experimental Research
Comparison of Internal Validity Across Research Designs
Applications of Surveys
Laboratory Experiment
Single-Subject Research
Match each component of experimental research with its specific role or function in the study design.
A researcher wants to know whether a new memorization strategy causes higher quiz scores. She recruits 50 participants and allows each person to choose whether to use the new strategy or their usual approach. She then compares the average quiz scores of the two groups. This study qualifies as an experiment because it compares two groups on a measured outcome.
In experimental research, what is the primary objective of systematically manipulating an independent variable and randomly assigning participants to conditions?
Match each core component of experimental research with its specific role in the research process.
A researcher investigating the effect of exercise on mood assigns 50 participants to a high-intensity workout group and 50 participants to a stretching group by flipping a coin for each person. True or False: Because the researcher used randomized assignment and systematically manipulated the type of exercise, this study qualifies as experimental research.
To establish a causal relationship between two variables, a researcher must strictly adhere to the logic of experimental design. Arrange the following steps in the sequence required to ensure internal validity and support a causal inference.
In the context of experimental research, which of the following best describes the fundamental goal of exercising a high degree of 'control' over variables of interest?
A researcher claims their study demonstrates that one variable directly produces a change in another, but a reviewer notices that participants were not randomly assigned to conditions. In evaluating the research design, the reviewer concludes that the lack of randomization prevents the study from supporting a(n) _____ inference.
In experimental research, the variable that the researcher systematically manipulates to observe its effects on the dependent variable is called the _____ variable.
An investigator wants to design a study to test a causal hypothesis. Evaluate the logical flow of components in experimental research by ordering these steps from the initial establishment of control to the final research objective.
Learn After
Internal Validity
Which of the following best describes the primary characteristic and resulting advantage of a laboratory experiment?
A researcher is conducting a study to see if blue light exposure affects alertness. Match each component of this laboratory experiment with its specific application in the study scenario.
A psychology researcher is designing a laboratory experiment to test a new hypothesis. Arrange the following steps in the correct logical order to demonstrate how the researcher moves from a controlled setting to a valid causal conclusion.
A researcher concludes that a laboratory experiment is the most effective choice for a study whose primary goal is to ensure findings can be generalized to natural, real-world environments, because the high degree of control ensures the results are universally valid.
You are creating a research protocol for a laboratory experiment to determine if 'blue-light exposure' before a task affects 'concentration levels.' Which of the following plans correctly synthesizes the necessary components to maximize internal validity and allow for causal conclusions?
A laboratory experiment is a research study conducted in a highly controlled environment to minimize outside influences.
Match each core characteristic or outcome of a laboratory experiment with the description that best explains its role in psychological research.
Because researchers can manipulate variables and minimize outside influences in a highly controlled setting, a study conducted under these conditions typically possesses high _____ validity, which allows researchers to draw strong causal conclusions.
A researcher designs an experiment to test whether a new reading software improves comprehension. In the initial design, participants use the software in a noisy classroom, introducing extraneous variables. To isolate the software's effect, the researcher moves the study to a quiet, standardized computer laboratory. By eliminating these external influences to ensure that only the software is causing the change in comprehension, the researcher is analyzing and modifying the study's design to maximize its _____ validity.
An undergraduate student is evaluating a published study to determine if the authors' strong causal conclusion is justified. Arrange the steps of this evaluation process in the correct logical sequence, starting with checking the study's setting and ending with making a final judgment about the causal claim.