====== The effect of Third Variables  ======
{{vimeo>132531681?large|The effect of Third Variables}}

==== PowerPoint ====
  * {{:research_methods: Microlecture 3 2 The effect of Third Variables 20150812.pptx| The effect of Third Variables}}

{{tag>causality causal_hypothesis bivariate explanation effect_of_a_third_variableconfounding confounding_variable specification interaction moderation moderator interaction_variable}}
{{tag>research_methods:ut research_methods:video}}
/* Number 3 2 */