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Critical Thinking about Psychology

Critical Thinking about Psychology. Lecture Two Don’t Believe Your Eyes. Administration. Room change Wednesday 9am seminar is in W0.01 Seminars start next week!. Last time…. We talked about how common beliefs about behaviour can be wrong

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Critical Thinking about Psychology

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  1. Critical Thinking about Psychology Lecture Two Don’t Believe Your Eyes

  2. Administration • Room change • Wednesday 9am seminar is in W0.01 • Seminars start next week!

  3. Last time… • We talked about how common beliefs about behaviour can be wrong • How much of the findings of psychological research are counter-intuitive • Illusion of explanatory depth. • This week we will go on to discuss other reasons why people’s conceptions about behaviour are wrong • Seeing patterns where none exist • Lack of self-knowledge

  4. We lack self-knowledge • Often the reasons for our behaviour are not accessible to us Nisbett and Ross (1977) • asked participants to judge the quality of different pairs of tights • all of the tights were in fact identical • the order in which the tights were presented varied • Results • participants always chose the last pair presented • However, they always generated plausible explanations “this pair was a better quality” or “a nicer colour” • None stated that they had chosen them because they were the last pair

  5. Modelling Behaviour • children and neonates model the behaviour of • similar things occur with smiling, nodding in conversations, mirroring body postures, etc. adults Provine (1986) • 55% of participants yawned within 5 minutes of watching a yawn video • contagious yawning

  6. Why do we engage in such modelling behaviour? Chartrand and Bargh (1999) • Participants interacted with confederates during an experiment • Confederate 1: shook foot • Confederate 2: rubbed face • Participant responses matched confederate behaviour Dabbs (1969) • Confederates who mimicked them were rated as having good ideas and being well-informed • If we act like other people then they will like us more!

  7. Seeing patterns where none exist • Often we can be fooled into thinking that a relationship exists between two variables when in fact none exists • E.g. lunar effects • This tendency underpins many curious examples from pseudoscience and parapsychology

  8. The Face on Mars! • Viking 1 in 1976 took the following image of an apparent face on Mars • Perhaps, built by martians and indicating an ancient civilisation? • Perhaps by the same people who built the ancient airstrips in Peru? • Or by those who made crop circles in Wiltshire?

  9. Ancient Astronauts!

  10. Crop Circles

  11. Kermit the Frog on Mars?

  12. The Face on Mars revisited • Photos from later missions sadly revealed that the face was just a bunch of hills.

  13. Pareidolia/Apophenia • These terms can be used interchangeably to describe the tendency for us to see patterns in random data • It is particularly pronounced when we try to make sense of obscure, out of focus or partial images. • It highlights the use of “top-down” processing in cognition • We are using our knowledge of the world to try to make sense of ambiguous data

  14. What is this? • At first we just see random dots • Then a picture of a dog emerges • Clearly being able to make sense of imperfect information is beneficial • But it sometimes leads to error…

  15. Religious artefacts • Images of mother Theresa in cinnamon buns Mother Theresa A cinnamon bun

  16. Hearing voices • We also make errors with ambiguous sounds. • In this next section we will examine some related phenomena • Electronic Voice Phenomena (EVP) • backward masking of hidden messages in rock music

  17. Electronic Voice Phenomena • When people die they become spirits – sources of energy • They interact with electronic recording equipment to leave messages…

  18. Hidden Messages • In the 1970s there was much consternation that satanic messages were hidden in popular music • These messages only became apparent when they were played backwards • http://jeffmilner.com/backmasking.htm

  19. Interpreting ambiguous sounds • Our language systems are highly developed at making sense of ambiguous sounds. • For example, Warren (1970) examined the phoneme restoration. • Replaced a phoneme with a cough in the following sentences • It was found that the (cough)eel was on the axle • It was found that the (cough)eel was on the orange • It was found that the (cough)eel was on the fishing-rod • It was found that the (cough)eel was on the table • We make sense of ambiguous sounds using our prior knowledge.

  20. So what have we learned today? • Explaining human behaviour isn’t always straightforward • We don’t always have insights into our behaviour • We often see patterns which do not actually exist • In order to draw sensible conclusions about the nature of behaviour we need to think critically about psychology.

  21. It’s my second week here and I really want to do some background reading… • Alcock, J.E. Electronic Voice Phenomena: Voices of the Dead? Skeptical EnquirerAvailable online at: http://www.csicop.org/specialarticles/evp.html • Stafford, T. (2007). Isn’t it all just obvious? The Psychologist, 20,2,94-95. • Wilson, Timothy D. (2002). Strangers to Ourselves: Discovering the Adaptive Unconscious. Cambridge, Ma.: Harvard University Press. Chapter 5.

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