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5 Written Questions

5 Matching Questions

  1. correlation
  2. population
  3. operational definition
  4. independent variable
  5. neurotransmitters
  1. a a measure of the extent to which two factors vary together, and thus of how well either factor predicts the other. The ____ coefficient is the mathematical expression of the relationship, ranging from -1 to +1
  2. b all the cases in a group, from which samples may be drawn for a study
  3. c a statement of the procedures used to define research variables
  4. d the experimental factor that is manipulated; the variable whose effect is being studied
  5. e chemical messengers that traverse the synaptic gaps between neurons. When released by the sending neuron, _____ travel across the synapse and bind to receptor sites on the receiving neuron, thereby influencing whether that neuron will generate a neural impulse.

5 Multiple Choice Questions

  1. the perception of a relationship where none exists
  2. An experimental procedure in which both the research participant and the research staff are ignorant about whether the participants have received the treatment or the placebo
  3. a neural impulse; a brief electrical charge that travels down an axon. the ____ is generated by the movement of positively charged atoms in and out of channels in the axon's membrane
  4. the most frequently occurring score in a distribution
  5. repeating the essence of a research study, usually with different participants in different situations, to see whether the basic finding extends to other participants and circumstances

5 True/False Questions

  1. thresholdthe level of stimulation required to trigger a neural impulse


  2. empiricism"morphine within"--natural, opiatelike neurotransmitters linked to pain control and pleasure.


  3. standard deviationa computed measure of how much scores vary around the mean score


  4. natural selectionthe condition of an experiment that contrasts with the experimental condition and serves as a comparison for evaluating the effect of the treatment


  5. endorphins"morphine within"--natural, opiatelike neurotransmitters linked to pain control and pleasure.


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