Maslow's Hammer
What is it?
Maslow's Hammer, also known as the Law of the Instrument, is a cognitive bias that occurs when an individual over-reliance on a familiar tool or approach leads them to view every problem through the lens of that tool.
In layman's terms, Maslow's Hammer is a tendency for people to use a familiar tool or solution for every problem, even when it's not the best fit. It's like trying to use a hammer for every household task just because it's your favorite tool. It is based on the saying, "If all you have is a hammer, everything looks like a nail," which is attributed to psychologist Abraham Maslow.
For example:
Imagine you're great at using a hammer and nails, so when you need to hang a picture on the wall, you automatically grab your hammer and some nails. However, using a picture hook and a small nail would have been a better choice to avoid damaging the wall too much.
You're an expert at using spreadsheets to organize information. When you need to manage a list of contacts, you create a complex spreadsheet, even though a simple address book app might be more efficient and user-friendly.
You've just learned about a new diet that helped you lose weight. Now, you recommend it to everyone you know, regardless of their individual health needs and goals, because it worked for you.
In all these examples, the person is using their "hammer" (a familiar tool or solution) for every problem, instead of considering other, more appropriate options.
Maslow's Hammer, or the Law of the Instrument, is a cognitive bias that illustrates the over-reliance on a familiar tool or approach when addressing problems, often at the expense of more suitable alternatives. This bias can be related to several other principles and cognitive biases in psychology and decision-making, including functional fixedness, confirmation bias, and availability heuristic.
Functional Fixedness: Functional fixedness is a cognitive bias that limits a person's ability to use objects in novel ways due to their preconceived understanding of the object's function. Like Maslow's Hammer, it restricts creative problem-solving by promoting the use of familiar tools in their conventional applications, disregarding alternative solutions (Duncker, 1945).
Confirmation Bias: Confirmation bias refers to the tendency to search for, interpret, and remember information in a way that confirms one's preexisting beliefs or hypotheses. In the context of Maslow's Hammer, individuals may be more likely to use familiar tools or approaches because they have previously experienced success with them, reinforcing their existing beliefs (Nickerson, 1998).
Availability Heuristic: The availability heuristic is a mental shortcut that causes individuals to rely on readily available information, often from personal experiences, when making decisions. This may lead to an overemphasis on familiar tools or approaches, similar to Maslow's Hammer, as people default to what they know and have experienced (Tversky & Kahneman, 1973).
References
- Duncker, K. (1945). On problem-solving. Psychological Monographs, 58(5), i-113.
- Nickerson, R. S. (1998). Confirmation bias: A ubiquitous phenomenon in many guises. Review of General Psychology, 2(2), 175-220.
- Tversky, A., & Kahneman, D. (1973). Availability: A heuristic for judging frequency and probability. Cognitive Psychology, 5(2), 207-232.