YOUR 'No research has been done' headline to Rebecca Bartleet's letter (May 22) exaggerates: she does cite a 2008 study on the impact of wind turbines on tourism in Scotland. However, a follow up for the Scottish Government by the James Hutton Institute in 2012, says  'There is no evidence to suggest that subsequent wind farm development in these [study] areas has had an adverse effect [on visitor numbers and spend]'. The same briefing reviewed recent visitor surveys and academic papers and concluded there was 'no new evidence to contradict the earlier findings that wind farms have little or no adverse impact on tourism in Scotland'. The research I had in mind in my original letter is more directly relevant, in that it was done in Cornwall in August 2013 by the South West Research Company, through a face-to-face survey of over 1,000 visitors at six holiday locations.   Of those aware of wind farms, 71% said their presence had no impact on their visit at all, 19% indicated that they actually had a positive impact on their visit to the county and 10% said they had a negative impact on their visit. Only 2% said the presence of wind or solar farms might deter a future visit — whereas 4% said it might make them more likely to return. Seems like our tourists have the right idea! Christine Harbottle Deer Park Lane Tavistock