title: Researching evaluation influence: a review of the literature.
abstract: BACKGROUND
  The impact of an evaluation is an important consideration in designing and carrying out evaluations. Evaluation influence is a way of thinking about the effect that an evaluation can have in the broadest possible terms, which its proponents argue will lead to a systematic body of evidence about influential evaluation practices.
  
  
  METHODS
  This literature review sets out to address three research questions: How have researchers defined evaluation influence; how is this reflected in the research; and what does the research suggest about the utility of evaluation influence as a conceptual framework. Drawing on studies that had cited one of the key evaluation influence articles and conducted original research on some aspect of influence this article reviewed the current state of the literature toward the goal of developing a body of evidence about how to practice influential evaluation.
  
  
  RESULTS
  Twenty-eight studies were found that have drawn on evaluation influence, which were categorized into (a) descriptive studies, (b) analytical studies, and (c) hypothesis testing.
  
  
  CONCLUSIONS
  Despite the prominence of evaluation influence in the literature, there is slow progress toward a persuasive body of literature. Many of the studies reviewed offered vague and inconsistent definitions and have applied influence in an unspecified way in the research. It is hoped that this article will stimulate interest in the systematic study of influence mechanisms, leading to improvements in the potential for evaluation to affect positive social change.
authors.affiliation: University of South Australia, Adelaide, South Australia, Australia james.herbert@unisa.edu.au.
authors.forename: James Leslie
authors.initials: JL
authors.lastname: Herbert
mesh_terms: D003657:Decision Making; D006801:Humans; D015397:Program Evaluation; D012107:Research Design
keywords: evaluation influence; evaluation research; literature review; program evaluation