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Investigating Cohort Effects on Deer Hunter Participation in Michigan and Wisconsin. Richelle Winkler & Chris Henderson Dept of Social Sciences/Environmental & Energy Policy Grad Program Michigan Tech University.

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slide1

Investigating Cohort Effects on Deer Hunter Participation in Michigan and Wisconsin

Richelle Winkler & Chris Henderson

Dept of Social Sciences/Environmental & Energy Policy Grad Program

Michigan Tech University

common explanations
Common Explanations
  • Time demands
  • Land conversion/accessibility
  • Alternative activities
  • Urbanization
  • Fewer animals
  • Changing social support/counter-movement, etc.
  • Policy Change
  • Population Aging

Cohort Theory

research questions
Research Questions
  • To what extent are cohort effects driving hunter participation?
  • How does this vary across space, by sex, by species hunted?
  • What are the implications for future hunting numbers and the North American Model?
  • How can we explain cohort effects?
age period cohort models
Age-Period-Cohort Models

Theoretically Distinct

…But Empirically Blurred?

data analysis
Data & Analysis
  • State license records by single year age, sex, residence
    • Not by race/ethnicity
  • General population estimates and projections (US Census Bureau)
  • APC Analysis using Intrinsic Estimator (IE) approach in Stata (Yang et al. 2008)
in summary future questions
In Summary/Future Questions
  • Growing body of research suggesting cohort effects are key. We need to design research and planning strategies that consider this approach.
  • Michigan and Wisconsin very similar-- effects of policy, env?
  • Models predict exacerbated decline to come
    • lasting social change away from hunting?
    • Serious implications for North American model
  • Could be spatial variation, sex, race…
  • Important to understand WHY cohort effects? Anglers too? Small game? Etc.
slide20

Middle-aged decline greatest in east.

Most Drop-out

(2004-2009):

Forest (-19%)

Vilas (-18%)

Juneau (-16%)

Florence (-14%)

Oneida (-14%)