When hiring a new employee, there’s always the risk that they aren’t as good of a fit as you thought. Someone confident and charming who seems great on paper might not actually have applicable skills they need for the position.
Someone’s ability to successfully complete an interview may not reflect their ability to do their job. A successful interviewee might just be more personable or do better under pressure. That’s great for sales or customer facing jobs, but probably doesn’t apply to how well someone can do in a technical or creative position.
If you want to hire someone who is actually good for the job, you need to ask the right questions. Take into consideration these interviewing techniques to find someone who will be a good fit beyond the interview.