FACTOID # 10: The total number of state executions in 2005 was 60: 19 in Texas and 41 elsewhere. The racial split was 19 Black and 41 White.
 
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Encyclopedia > Post hoc ergo propter hoc

Post hoc ergo propter hoc, Latin for "after this, therefore because of this", is a logical fallacy (of the questionable cause variety) which assumes or asserts that if one event happens after another, then the first must be the cause of the second. It is often shortened to simply post hoc and is also sometimes referred to as false cause or coincidental correlation. It is subtly different from the fallacy cum hoc ergo propter hoc, in which the chronological ordering of a correlation is insignificant. This article is about a TV show. ... Post Hoc, Ergo Propter Hoc is the 2nd episode of The West Wing. ... For other uses, see Latin (disambiguation). ... Look up fallacy in Wiktionary, the free dictionary. ... Fallacies of questionable cause, also known as causal fallacies, non causa pro causa (non-cause for cause in Latin) or false cause, are informal fallacies where a cause is incorrectly identified. ... Correlation does not imply causation is a phrase used in the sciences and statistics to emphasize that correlation between two variables does not imply there is a cause-and-effect relationship between the two. ...


Post hoc is a particularly tempting error because temporal sequence appears to be integral to causality. The fallacy lies in coming to a conclusion based solely on the order of events, rather than taking into account other factors that might rule out the connection. Most familiarly, many superstitious beliefs and magical thinking arise from this fallacy. Causality or causation denotes the relationship between one event (called cause) and another event (called effect) which is the consequence (result) of the first. ... For other uses, see Superstition (disambiguation). ... In psychology and cognitive science, magical thinking is non-scientific causal reasoning (e. ...

Contents

Pattern

The form of the post hoc fallacy can be expressed as follows:

  • A occurred, then B occurred.
  • Therefore, A caused B.

Examples

From Attacking Faulty Reasoning by T. Edward Damer, Third Edition p. 131:

"I can't help but think that you are the cause of this problem; we never had any problem with the furnace until you moved into the apartment." The manager of the apartment house, on no stated grounds other than the temporal priority of the new tenant's occupancy, has assumed that the tenant's presence has some causal relationship to the furnace's becoming faulty.

From With Good Reason by S. Morris Engel, Fifth Edition p. 165:

More and more young people are attending high schools and colleges today than ever before. Yet there is more juvenile delinquency and more alienation among the young. This makes it clear that these young people are being corrupted by their education.

See also

Causality or causation denotes the relationship between one event (called cause) and another event (called effect) which is the consequence (result) of the first. ... A chain reaction is a sequence of reactions where a reactive product or by-product causes additional reactions. ... The domino effect refers to a small change which will cause a similar change nearby, which then will cause another similar change, and so on in linear sequence, by analogy to a falling row of dominoes standing on end. ... Point attractors in 2D phase space. ... For other uses, see Superstition (disambiguation). ... In psychology and cognitive science, magical thinking is non-scientific causal reasoning (e. ... For other uses, see Cargo cult (disambiguation). ... Correlation does not imply causation is a phrase used in the sciences and statistics to emphasize that correlation between two variables does not imply there is a cause-and-effect relationship between the two. ... The regression (or regressive) fallacy is a logical fallacy. ...

External links


  Results from FactBites:
 
Post hoc ergo propter hoc - Wikipedia, the free encyclopedia (349 words)
Post hoc ergo propter hoc is Latin for "after this, therefore because of this." It is often shortened to simply post hoc.
Post hoc, also known as "coincidental correlation" or "false cause," is a logical fallacy which assumes or asserts that if one event happens after another, then the first must be the cause of the second.
Post hoc is an example of affirming the consequent.
NationMaster - Encyclopedia: Post hoc (534 words)
Post hoc, also known as "coincidental correlation," is a logical fallacy which assumes or asserts that if one event happens after another, then the first must be the cause of the second.
Post hoc is an example of affirming the consequent Affirming the consequent is a logical fallacy in the form of a hypothetical proposition.
Post hoc reasoning is related to the logical fallacy "correlation implies causation Correlation implies causation, also known as cum hoc ergo propter hoc (Latin for "with this, therefore because of this") and false cause, is a logical fallacy by which two events that occur together are claimed to be cause and effect.
  More results at FactBites »

 
 

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