You get a cup of coffee from a vending machine each morning. Two mornings in a row, the machine accepts your coins but does not supply coffee. The next day you bring a thermos of coffee with you. Your reaction to the vending machine illustrates that ______________ has occurred.
a. discrimination
b. extinction
c. negative reinforcement
d. spontaneous recovery
Question 2
Which of the following objectives would be better evaluated using criterion-referenced grading rather than norm-referenced grading?
a. Ascertain how much students know about biology, compared with students in other schools.
b. Determine which reading test produces the highest reading comprehension scores.
c. Assess how well students have mastered English grammar.
d. Predict how well your students will do in their first semester of college.
Evidence that the ATP synthase is a rotary machine
Morning Coffee
American women operating machine lathes in a munitions factory.
Claude Monet, Water Lilies, Morning: Willows (central section and right side).
Use tap water when making coffee, tea, or juice from concentrate, and for food preparation
ECG machine