In a Study to Help People Quit Smoking Cigarettes,a Group

question 27

Multiple Choice

In a study to help people quit smoking cigarettes,a group of participants received one supportive phone call 10 days after attending a program on strategies to resist smoking.A second group received a supportive phone call every week for 6 weeks after attending the program,and a third group received no supportive phone calls after attending the program.What property of experimental research did the researcher employ in this study?

• A) Quasi-experimental research, no control group
• B) Random assignment to research groups
• C) Manipulation of the intervention dose
• D) Controlling for extraneous variables

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Definitions:

Dabbawalas

A highly efficient and organized lunchbox delivery and return system primarily operating in Mumbai, India, involving the collection of home-cooked meals from customers' residences and delivering them to their workplace.

Temporal Aggregation

The process of summarizing data over time to simplify analysis and detect patterns.

Rail

A mode of transportation that involves the movement of goods and passengers on tracks with trains.

Freight Transportation

The movement of goods and materials through various modes of transportation, such as trucks, ships, and trains.