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------------------------------------------------ Dr. Jones is conducting research to determine if IQ changes with age. The research design includes three groups of participants:

- Group 1 consists of 10-year-olds.
- Group 2 consists of 15-year-olds.
- Group 3 consists of 25-year-olds.

Dr. Jones gives an IQ test to all three groups to determine the average IQ of each group. What is the design of the research?

The design of the research is cross-sectional, because Dr. Jones formed three groups of participants such as group 1 consists of 10 year olds, group 2 of 15 year olds, and group 3 of 25 year olds. And then Dr. Jones gives an IQ test to all three groups to determine the average IQ of group 1, group 2, and group 3.

A cross-sectional study can be defined as a type of research design in which you collect data from many different individuals at a single point in time. In this design of the research, you observe variables without influencing them.

Learn more about cross-sectional here https://brainly.com/question/9004617

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