Identifying Independent and Dependent Variables Activity 1 A

Identifying Independent and Dependent Variables

Activity #1

A developmental psychologist is interested in how the activity level of four-year-olds is affected by viewing a 30-minute video of SpongeBob SquarePants or a 30-minute video of Sid the science kid.

IV:The level of Activity

DV:affect on four-year-old

Hypothesis:

A psychiatrist wants to test the impact of a new drug designed to increase the ability of teenagers with ADHD to take accurate notes in class.

IV:

DV:

Hypothesis:

A biopsychologist wants to know whether exposure to testosterone in adult female rats increases their aggressive behavior.

IV:

DV:

Hypothesis:

An industrial/organizational psychologist believes that cooling the temperature of a room may have an impact on the productivity of workers on an assembly line.

IV:

DV:

Hypothesis:

Solution

The dependent variables are those which rely on the other variables. Such as Price of a commodity depends upon its weight/size. So, price is the dependent variable here and the \'size / weight\' are the independent variables.

A hypothesis is the intution generated from the observation or practical experience.

On the above knowledge, we can easily answer these questions-

1) The IV is the content of video watched - Sponge Bob or Sid the science kid.

    The DV is activity level of four year old children.

And Hypothesis is - Activity level is higher for the sponge bob.

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2) The ID is the type of drug given - new drug or placebo.

   The DV is Accuracy of notes taken in class.

And, the Hypothesis is - Accuracy is higher for the new drug.

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3) The IV is Type of drug given- Testosterone or Placebo

   The DV is Aggressive behavior.

Hypothesis is - Aggressive behavior increases with exposure to Testosterone.

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4) The IV is the Temperature of the room - Cooler or Normal.

   The DV is Productivity.

hypothesis - The productivity is higher on cooling the temperature of room.