Planning Fallacy: we underestimate the time a... - Deepstash

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Planning Fallacy: we underestimate the time a task will actually take from us, outsiders overestimate the time others need for a task.

Pro-innovation Bias: not seeing the limitations and weaknesses of a particular innovation, only wanting to implement the innovation.

Restraint Bias: we overestimate our ability to control impulsive behavior, we don’t think we’ll get addicted on something.

Overconfidence Effect: we think we make better decisions than we actually do, especially if our self-confidence is high.


333 reads


Social Desirability Bias: in conversation with others, we answer questions in a way we think will make the other person happy, personally and professionally.

Third-person Effect: we overestimate the effect that mass communication has on others, but underest...


321 reads

Reverse Psychology / Reactance: promote a belief or behavior that is opposite to the desired behavior, the person is then more inclined to start doing the opposite (the desired).

Decoy Effect: people tend to make a certain choice between two options if give...


309 reads

Sunk Cost Fallacy: something paid for that cannot be reversed. Past costs incurred are no longer relevant to future decisions.

Irrational Escalation: continuing what you were doing despite having negative outcomes because it is in line with past decisions a...


300 reads

Conjunction Fallacy: we think something is more likely to happen if it contains a specific condition (loses the first set, but wins the match) than if it is presented as a general event (wins the match).

Law of Triviality: focusing on non-important details ...


280 reads

Automation Bias: preference of suggestions made by an automated system, even if a non-automated suggestion is better.

Bandwagon Effect: adopting a certain behavior, belief, style or attitude because others do it.

Placebo: believing so...


499 reads

Neglect of Probability: neglecting a relatively small chance that something will happen. Not wearing a seatbelt because there is a small chance of an accident happening.

Anecdotal Fallacy: evidence based entirely on personal experience without real evidence...


654 reads

Well Traveled Road Effect: estimating route times differently because you are unfamiliar with the route. Routes traveled more often seem to take less time than new routes.

Mental Accounting: we put a value on something we have earned that is based on how we...


422 reads

Cue-Dependent Forgetting: remembering certain things by thinking of equivalent memories.

Frequency Ilussion / Baader-Mein...


1.2K reads

Normalcy Bias: we underestimate things that might come, sometimes we don’t even believe they are going to come. For example, think of a car accident or a natural disaster.

Zero Sum Bias: thinking that if one thing goes up that another will go down.


398 reads

Risk Compensation: we become more cautious when risk is high and become less cautious when we feel confident and secure.

Hyperbolic Discounting / Instant Gratification: we prefer a reward if we get it sooner, we unconsciously attach a discount to a reward t...


1.29K reads

Dunning-Kruger Effect: people without skills overestimate their own ability, people with lots of skills underestimate their own ability.

Egocentric Bias: we place too much value on our own perspective and opinion.

Optimism Bias: think...


331 reads

Primacy Effect: we best remember information presented first.

Memory Inhibition: we don’t remember much of irrelevant information.

Modality Effect: the way knowledge is presented contributes to how well the knowledge is remembered. In...


266 reads

Selective Perception: we ignore certain things if they are not in line with what we believe.

Observer-Expectancy Effect: people behave differently when someone is watching them.

Experimenter’s Bias / Observer Effect: a researcher can,...


881 reads

Functional Fixedness: using an object only for the way it traditionally should be used.

Self-licensing: increased self-confidence makes an individual more likely to engage in undesirable behavior because they believe there are no consequences.


519 reads

IKEA Effect: we place more value on products that we have helped create.

Zero-Risk Bias: we prefer to reduce risk on subcomponents than remove a greater amount of risk over the whole.

Processing Difficulty Effect: we remember informat...


282 reads

Self-serving Bias: we want to keep our self-esteem high, therefore we think that success comes from our own ability and we write off mistakes to external factors.

Illusion of Control: we overestimate our ability to influence certain events.



1.66K reads

Distinction Bias: we place more value on the difference between two options when comparing them than we would if we were evaluating them separately.

Framing Effect: people are influenced by the way information is presented, 20% fat or 80% fat free.


1.02K reads

151 Cognitive Biases

Attentional Bias: subconsciously we choose points where we pay attention to. A smoker is more likely to notice other people smoking.


4.08K reads

Picture Superiority Effect: we remember pictures better than text.

Self-Reference Effect: things we feel related to we remember better.

Negativity Bias: people are more likely to be attracted to negativity.



2.47K reads

Information Bias: more information is not always better; we think we make better choices when we have more information, but that is often not the case.

Ambiguity Bias: we prefer options that have a higher probability of success than options whose probabilit...


271 reads

Illusory Correlation: seeing a correlation between two variables that are unrelated.

Pareidolia: seeing patterns or objects in something that are not there. For example, seeing shapes in the clouds.

Anthropomorphism: personifying an a...


594 reads

Illusion of Transparency: we assume that others know how we feel.

Curse of Knowledge: while communicating with others we think they know the same as us.

Spotlight Effect: people feel watched, much more than they are actually watched.


369 reads

Serial Recall Effect: our ability to recall items or events in order.

Misinformation Effect: our ability to adjust memories of events after hearing information after the event has occurred.

Peak-end Rule: the value we place on a memor...


241 reads

Naïve Cynicism: we think people are more selfish than they really are.

Naïve Realism / Bias Blind Spot: we think we see the world objectively and that others who don’t see it the same way are misinformed, irrational or biased.

Clustering Illus...


775 reads

Absent-mindedness: people have three reasons for not paying attention or forgetting things:

  • Lack of attention
  • Tunnel vision on one item and forgetting the rest
  • Distraction by external factors

Testing Effect: things are sent ...


334 reads

Illusion of Assymetric Insight: we think we know others better than others know themselves.

Rosy Retrospection: people judge the past as more positive than the present.

Hindsight Bias: we think past events were more predictable than t...


341 reads

Halo Effect: people, companies, brands or products are judged by their past performance or personality, even if the current or future situation has nothing to do with it.

Cheerleader Effect: individual people are more attractive in a group.



489 reads

Fading Affect Bias: memories with negative associations are forgotten faster than positive memories.

Negativity Bias: we are much more attracted to negativity.

Prejudice / Stereotypical Bias: we prejudge people based on the group we p...


264 reads

Cryptomnesia: we see something somewhere and later remember it as something we did or made ourselves.

False Memory: remembering things we think we made, but which in fact never happened.

Suggestibility: we are willing to accept sugges...


261 reads




"A good idea should be like a girl's skirt; long enough to cover the subject and short enough to create interest."

A cognitive bias is a systematic error in thinking that occurs when people are processing and interpreting information in the world around them and affects the decisions and judgments that they make. Can be used in Marketing ...

More like this

The Progress Principle

If we don’t see enough progress by the end of the day, it feels (to us or our superiors) like we haven’t done enough.

Apart from the completion bias, where our brain seems hardwired to wanting to finish the given tasks, we are also having another cognitive bias called the plan...

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