Two major online retailers have been accused of misleading consumers in the sale of products online. as using prompts online which are recognised as pressure tactics by behavioural scientists. In tests by the consumer watchdog, claims made in the prompts did not always reflect its own results. Go to website ADVERTISEMENT Invest at least £100 in Stocks or ETFs of your choice. Go to website ADVERTISEMENT He told Which?: “There are studies that show increased brain activity around the notion something might sell out.