3 Tutorials that teach The Effect of Bias in Moral Decision Making
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The Effect of Bias in Moral Decision Making

The Effect of Bias in Moral Decision Making

Author: John Lumsden

Recognize the effects of bias in moral decision making

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Introduction to Psychology

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In this tutorial we will be looking at the way bias obstructs proper ethical evaluation. Our discussion will break down like this:
  1. Review of Bias
  2. Bias in Ethical Decision Making

1. Review of Bias

First of all, recall that ethics aims to provide evaluations of all possible actions. It does this by consistently applying its standards of judgment. In this way, ethics is systematic and objective.

One of the biggest barriers to proper ethical evaluation is when our own attitudes or views distort a fair and even evaluation of things. This is commonly referred to as bias.

Fair and consistent moral evaluations have been advanced by eliminating biases. For instance, some of the bias against women was overcome once they won the right to vote.

If you want to be an ethical person, then you need to make sure you aren’t allowing biases to influence your judgments. Once you do this, you can be consistent in your ethical judgments and not treat some people differently than others due to prejudice.

Bias is an unfair preference for or against something, which gets in the way of proper ethical evaluation.

2. Bias in Ethical Decision Making

If you make your ethical judgments suit your own views, beliefs, or interests, then you aren’t really trying to get to truthful ethical judgments. Instead, you’re just trying to make what you would think anyway have the appearance of morality.

One way you might become aware that bias is influencing your judgments is to see if they are consistent in the standards they use.

If you usually dismiss all convicted criminals as bad people, but then defend a family member against similar objections, do you think bias may have caused the inconsistency?

In the above case you might provide reasons that your family member is an exception to your usual judgment.

You might say that their crime wasn’t that bad, or that they’re really a good person, but they just got stuck in a bad situation, etc.

But if you use these reasons only when it suits you, then they’re not really ethical reasons. Rather you’re just using them to support your own interest in defending your family member. Likewise, if you refuse to see that other criminals may be in a similar circumstance, then you’re reducing these considerations to keep your bias against criminals.

You can find these kinds of inconsistencies all around you.


Some politicians target certain people they consider to be freeloaders, such as people on welfare. But they then support people that avoid contributing to society, such as companies that are guilty of tax avoidance.

It’s in the interest of many politicians to be inconsistent like this. That’s because big companies have power and people on welfare don’t. To defend their reasoning, they could inflate reasons to support their bias, and minimize reasons that go against it.

They might exaggerate the strain on the economy that welfare produces. Or they might avoid pointing out the vast profits of the companies they support that pay little or no tax.

We started this tutorial with a review of bias, to see how philosophical ethics needs to expose unfair or biased judgments if it’s going to provide consistent judgments. Then some examples of bias in ethical decision making were presented. We saw that self-interest can distort our judgments and make us unethical.