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| url = https://books.google.com/books?id=OYe6fsXSP3IC&pg=PA28| isbn = 9781412836296
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| 1967 || || {{w|Risk compensation}}. In Sweden, following [[w:Dagen H|the change from driving on the left to driving on the right]] there is a drop in crashes and fatalities, which is linked to the increased apparent risk. The number of motor insurance claims going down by 40%, returning to normal over the next six weeks.<ref>{{cite book|title=Risk and Freedom: Record of Road Safety Regulation|first=John |last=Adams|publisher=Brefi Press|year=1985|isbn=9780948537059}}</ref><ref>{{cite news|quote=On the day of the change, only 150 minor accidents were reported. Traffic accidents over the next few months went down. ... By 1969, however, accidents were back at normal levels|title=Dagen H: The day Sweden switched sides of the road|work=Washington Post|url=https://www.washingtonpost.com/blogs/blogpost/post/dagen-h-the-day-sweden-switched-sides-of-the-road-photo/2012/02/17/gIQAOwFVKR_blog.html|first=Elizabeth|last=Flock|date=2012-02-17}}</ref> Fatality levels would take two years to return to normal.<ref>"On September 4 there were 125 reported traffic accidents as opposed to 130-196 from the previous Mondays. No traffic fatalities were linked to the switch. In fact, fatalities dropped for two years, possibly because drivers were more vigilant after the switch." Sweden finally began driving on the right side of the road in 1967 ''The Examiner'' Sept 2, 2009</ref><ref group="n">{{harvtxt|Rudin-Brown |Jamson|2013}} "An example of risk overestimation in the short run is offered by the experience in Sweden when that country changed from left- to right-hand driving in the fall of 1967. This intervention led to a marked surge in perceived risk that exceeded the target level and thus was followed by a very cautious behavior that caused a major decrease in road fatalities. ...the accident rate returned to 'normal' within 2 years."</ref>
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| 1967 || || "Chapman (1967) described a bias in the judgment of the frequency with which two events co-occur. This demonstration showed that the [[co-occurrence]] of paired stimuli resulted in participants overestimating the frequency of the pairings." ""{{w|Illusory correlation}}" was originally coined by Chapman and Chapman (1967) to describe people's tendencies to overestimate relationships between two groups when distinctive and unusual information is presented.<ref name="Chapman1967">{{cite journal|last1=Chapman|first1=L|title=Illusory correlation in observational report|journal=Journal of Verbal Learning and Verbal Behavior|volume=6|issue=1|year=1967|pages=151–155|doi=10.1016/S0022-5371(67)80066-5}}</ref>"<ref>{{cite journal|last=Chapman|first=L.J|title=Illusory correlation in observational report|journal=Journal of Verbal Learning|year=1967|volume=6|pages=151–155|doi=10.1016/s0022-5371(67)80066-5}}</ref>
