Table of Contents:
  • 1. Volunteer bias
  • The reliability of volunteering
  • 2. Characteristics of the volunteer subject
  • Assessing the nonvolunteer
  • Sex
  • Birth order
  • Sociability
  • Extraversion
  • Self-disclosure
  • Altruism
  • Achievement need
  • Approval need
  • Conformity
  • Authoritarianism
  • Conventionality
  • Arousal-seeking
  • Anxiety
  • Psychopathology
  • Intelligence
  • Education
  • Social class
  • Age
  • Marital status
  • Religion
  • Size of town of origin
  • Summary of volunteer characteristics
  • 3. Situational determinants of volunteering
  • Material incentives
  • Aversive tasks
  • Guilt, happiness, and competence
  • Normative expectations
  • Public versus private commitment
  • Prior acquaintanceship
  • Recruiter characteristics
  • Task importance
  • Subject interest
  • Organizational and interpersonal bonds
  • Expectation of favorable evaluation
  • Summary of situational determinants of volunteering
  • Suggestions for the reduction o volunteer bias
  • 4. Implications for the interpretation of research findings
  • An ethical dilemma
  • The threat to robustness
  • Motivational differences and representativeness
  • The threat to the validity of inferred causality
  • 5. Empirical research on voluntarism as an artifact
  • Independent variable
  • Exploratory research
  • Type-I and Type-II error outcomes
  • The "good subject" in verbal-conditioning research
  • When compliance shifts to self-defense
  • Role expectations of volunteers and nonvolunteers
  • Summary of the research findings and conclusions
  • 6. An integrative overview
  • The artifact-influence model
  • Steps in the artifact-influence process
  • Inferential validity as an assessment criterion
  • Representative research design
  • 7. Summary
  • Reliability of volunteering
  • Assessing the nonvolunteer
  • Volunteer characteristics
  • Situational determinants
  • Suggestions for reducing volunteer bias
  • An ethical dilemma
  • Robustness of research findings
  • The artifact problem
  • Motivational elements
  • An artifact-influence model.