Dr. Jeffries, a cognitive psychologist, conducts an experiment examining the effect of emotion on memory. She provides lists of 20 words to two groups of participants. The emotion group is given a list of words that are very emotional in content (e. g., passion, murder). The neutral group is given a list of words that are neutral in content (e. g., houseplant, desk). Each group studies the words for 3 minutes. Then, after a 5-min distractor task (watching a video about nature), Dr. Jeffries then measures how many words each group is able to remember. Which of the following is the independent variable in Dr. Jeffries’ study?

A) The emotional or neutral word list.
B) The length of the distractor task.
C) The number of words remembered.
D) The number of words on the list.

A) The emotional or neutral word list

Explanation:

An independent variable in a research study, is the variable which when manipulated or changed, brings a change or effect on the dependent variable that is measured. In order words, the independent variable is the variable that is being manipulated, especially in an experimental research design.

In the experiment conducted by Dr. Jeffries, as we can see in the question above, the variable that is manipulated here is the "emotional or neural word list". Therefore, the independent variable in Dr Jeffries' study is the emotional or neutral word list.

answer; /// i believe that the correct answer is(cognitive revolution);

levels of production can be increased by technology while holding labor and capital constant, because increased technology makes the production process more efficient. subsequently, the lras curve is almost a vertical line, that can shift to the right, with an increase in technology.

the relationship between the lras curve and the ppc is that both can make the economy could grow. the ppc achieves that when it shifts outward because of more resources or technological advances while the lras curve shifts if more resources are developed or if there are technological advances.

the lras curve is a vertical line at an output level that represents the number of goods and services a nation can produce over a sustained period using all of its productive resources as efficiently as possible with all of the current technology available to it.

the production possibilities frontier (ppf) is a graphical device that is used for economic analysis of production decisions because the ppf measures the maximum possible combinations of two goods that an economy is capable of producing with its currently available resources and technology.