Understanding Variables in Research

The video tutorial explains the concept of variables in research, focusing on independent, dependent, and confounding variables. It provides definitions and examples to clarify these concepts, using studies on energy drinks, music and test scores, response times, and sleep and happiness. The tutorial emphasizes the importance of identifying and controlling confounding variables to ensure accurate research results.

What is the role of an independent variable in a research study?

• It is the variable that is manipulated.

• It is the variable that is ignored.

• It is the variable being measured.

• It is the variable that remains constant.

In the energy drink study, what is the dependent variable?

• Brand of energy drink

• Type of energy drink

• Time of day

• Amount of energy

Which of the following could be a confounding variable in the energy drink study?

• The color of the drink

• The time of day the drink is consumed

• The brand of energy drink

• The price of the drink

In the study on '90s hip-hop music, what is the independent variable?

• Test score

• Type of music

• Study duration

• Exam difficulty

What could be a confounding variable in the study on '90s hip-hop music?

• The student's favorite music genre

• The student's age

• The student's height

• The student's shoe size

In the response time study, what is the dependent variable?

• The age of the participants

• The speed of response

• The number of participants

• The location of the study

Which of the following could be a confounding variable in the response time study?

• The weather outside

• The type of clothing worn

• The color of the room

• The time of day the cry for help occurs

In the sleep and happiness study, what is the dependent variable?

• Time of sleep

• Level of happiness

• Quality of sleep

• Amount of sleep

What could be a confounding variable in the sleep and happiness study?

• The type of bed used

• The color of the bedroom

• The time of day sleep occurs

• The brand of pillow

What is a confounding variable?

• A variable that is always constant

• A variable that is manipulated

• A variable that interferes with the dependent variable

• A variable that is measured