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Texas DWI defense attorneysAlthough police officers are held to a higher moral standard than most civilians are, they are still capable of making mistakes like any other person. For instance, an officer’s bias could affect their decisions if they stop you on suspicion of driving while intoxicated. An officer is required to have reasonable suspicion that you are violating the law in order to stop you and probable cause that you have committed a crime in order to arrest you. This means that the officer should look at the evidence objectively before concluding that you are intoxicated, but some officers have already formed their opinion before they even talk to you. You may be able to defeat a DWI charge against you if you can prove that the officer’s confirmation bias was the reason for your arrest.

What Is Confirmation Bias?

When a police officer already suspects that you are intoxicated, they will pay more attention to evidence that confirms their bias or interpret evidence in a way that supports their bias. This is known as confirmation bias, and there are several ways that an officer may unintentionally use it during a DWI stop:

  • The officer assumes that any sluggish or unusual behavior is a symptom of intoxication when you may be sick, fatigued, or nervous.
  • The officer does not consider the many factors other than intoxication that could affect your performance on a field sobriety test, such as physical health issues.
  • The officer assumes that your refusal to answer questions or agree to a chemical sobriety test means that you are hiding the fact that you are intoxicated.

Confirmation bias is one of the primary reasons you should refuse a field sobriety test, even when you know you are sober. Evaluating your balance or eye movement is completely subjective, and the officer’s interpretation of your performance might be based on an assumption that you are intoxicated.

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