In 2015, the University of Virginia led a new Reproducibility Project that repeated 100 classic psychological studies and they were only able to successfully replicate one-third of them.
But the article goes on to allow for the possibility that one of the factors causing reproducibility failures could be the passage of time. Specifically, in 1988, a study was done which concluded that our facial expressions can influence our mood - so the more we smile the happier we'll be.
The stimuli for the experiment was a Far Side comic by Gary Larson. I'll bet you have never heard of it or him. Humor has changed quite a bit since the 80's so I wouldn't be at all surprised if the experiment could be replicated now, but only with a contemporary comic.
The failed University of Amsterdam in the Netherlands replication study also had a problem of its own - subject bias. As with most psychology studies it used psychology students for the sample. And since this was a classic research study, they may have already been familiar with it.
So what do you think? Does this invalidate the results of the initial study? Which issue concerns you more? Would you use the results? If so, how? Have you seen other evidence supporting the basic thesis that facial expressions can influence mood?
(2016, September 26) MacDonald, F. Two More Classic Psychology Studies Just Failed The Reproducibility Test. sciencealert.com Retrieved September 11, 2017, fromhttps://www.sciencealert.com/two-more-classic-psychology-studies-just-failed-the-reproducibility-test