Research
NVC lacks significant "longitudinal analytical research" and few studies have evaluated the effectiveness of NVC training programs. To date, there has been little discussion of NVC in academic contexts. Most evidence for effectiveness of NVC has been anecdotal or based on theoretical support.
As of 2011, six Master's theses and Doctoral dissertations are known to have tested the model on sample sizes of 108 or smaller and generally have found the model to be effective.
Allan Rohlfs, who first met Rosenberg in 1972 and was a founder of the Center for Nonviolent Communication, explains a paucity of academic literature as follows:
Virtually all conflict resolution programs have an academic setting as their foundation and therefore have empirical studies by graduate students assessing their efficacy. NVC is remarkable for its roots. Marshall Rosenberg, Ph.D. (clinical psychology, U of Wisconsin) comes from a full time private practice in clinical psychology and consultation, never an academic post. NVC, his creation, is entirely a grassroots organization and never had until recently any foundation nor grant monies, on the contrary funded 100% from trainings which were offered in public workshops around the world. ... Empirical data is now coming slowly as independent researchers find their own funding to conduct and publish empirical studies with peer review.
NVC has reportedly been involved in producing dramatic changes in forensic psychiatric nursing settings in which a high level of violence is the norm. NVC was adopted, in combination with other interventions, in an effort to reduce violence. The interventions were said to reduce key violence indicators by 90 percent over a three-year period in a medium security unit, and by around 50 percent in a single year in a maximum security unit.
Recent research appears to validate the existence of universal human needs.
Read more about this topic: Nonviolent Communication
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