1. Confirmation bias: This is the tendency to seek out information that confirms our existing beliefs, and to ignore or discount information that contradicts them. When hiring, we may be more likely to focus on the positive qualities of a candidate and overlook any red flags that indicate they might be lying.

2. The halo effect: This is the tendency to form a positive impression of someone based on a single positive trait or behavior. We may be more likely to hire someone who is charming or charismatic, even if they lack the skills or experience we need.

3. The need for closure: We all like to have a sense of certainty, and we may be more likely to hire someone who seems confident and sure of themselves, even if they're not.

4. Time pressure: When we're under pressure to fill a position, we may be more likely to overlook potential problems with a candidate in order to get the job done.

5. Lack of experience: If we're not experienced in hiring, we may not know what to look for in a liar. We may be more likely to be taken in by someone who is good at putting on a show.

Here are some tips for avoiding hiring a liar:

* Be aware of your own biases. Everyone has biases, but it's important to be aware of them so that you can avoid letting them affect your hiring decisions.

* Ask open-ended questions. This will give candidates more opportunity to reveal themselves, and it will be easier to spot any inconsistencies in their stories.

* Probe for details. Don't be afraid to ask for specific details about a candidate's experience, skills, and accomplishments.

* Check references. This is an important step in the hiring process, and it can help you to verify a candidate's qualifications and character.

* Trust your gut. If something doesn't feel right about a candidate, don't ignore it. It's better to err on the side of caution and pass on someone who might not be a good fit for your company.