On a job site, a whistle blows at 12 noon to indicate lunch break. For the workers, the whistle acts as a
a. positive, primary reinforcer.
b. positive, generalized reinforcer.
c. negative, generalized reinforcer.
d. positive, secondary reinforcer.
Question 2
At the end of each day's work, workers hired on a temporary basis receive that day's wages in cash. The cash may be described as
a. a positive, primary reinforcer.
b. a positive, secondary reinforcer.
c. a positive, generalized reinforcer.
d. a negative, generalized reinforcer.
In vitro oligonucleotide site-directed mutagenesis
How phytochrome acts as a molecular light switch.
A nearly motionless individual, alert to danger, will whistle when alarmed to warn other groundhogs
Image was downloaded from the Jet Propulsion Laboratory web site
To clear an obstructed airway in an infant (A) use chest thrusts followed by (B) back blows.
Amniocentesis. The patient is examined with ultrasound to determine the placental site and to locate ...