Many people believe that the "power of positive thinking" can effectively counteract serious and potentially terminal diseases. while it is certainly true that positive thinking is essential in with recovery, there is no research that suggests that positive thinking can reverse illnesses like cancer. these facts demonstrate which concept from this chapter?

Extraordinary claim

Explanation:

When there is no factual support like research evidence to support a suggestion which is based on positive thinking or positive feeling or simply good intention then such a statement or suggestion is known as extraordinary claims. In this case, the suggestion that positive thinking can reverse illnesses like cancer is not supported by research proof. Although, positive thinking might help in recovery or healing but suggesting that it can cure a disease like cancer is certainly an extraordinary claim.