Dr. Bhati ran a randomized controlled trial testing the effectiveness of a new drug to reduce tics (i.e., repetitive, spasmodic movements or verbalizations). She concluded that the drug substantially reduced tics to near-zero rates. However, this was only true in less than half of the sample that received the drug. This is an example of: 1. Type 1 error 2. Type 2 error 3. Type 3 error 4. Type 4 error