HOT ROC: Comparing Subjective Information

1. HOT ROC:Comparing Subjective Information • Form groups of four • For each of the following list, rate as a percentage the amount that environment and heredity influence the trait • (ex. Intelligence: environment 60%, heredity 40%) • 1. Body build 6. Handedness • 2. Intelligence 7. Height • 3. Personality 8. Musical ability • 4. Mathematical ability 9.Longevity • 5. Baldness

2. Nature v Nurture • Reading Questions from pages 174-176 • Twin studies: unitedstreaming • What can this information tell us? • How does our upbringing influence our ability to judge and process information?

3. Sensation & Perception

4. Sensation Definition • What occurs when a stimulus activates a receptor • How many senses are there? • 5 Senses • Sight, Hearing, Smell, Taste & Touch

5. Absolute Thresholds • Weakest detectable sensation • Examples (do not write down) • Sight- Seeing a candle flame 30 miles away on a clear night • Hearing- Hearing a watch ticking 20 feet away • Taste- 1 teaspoon of sugar dissolved in 2 gallons H2O • Smell- 1 drop of perfume in a 3 room house • Touch- Feeling a bee’s wing fall 1 cm onto your cheek

6. Perception Definition • Organizing sensory info. into meaningful experiences • Brain tries to make sense of large amount of stimuli • Creates “wholes” out of bits of info. (Gestalt)

7. Perceptual Set • Past experiences and perceptions create a framework through which you view the world • Ex “I perceive all old people as kind b/c my grandma is kind.”

9. Simplicity (Reification) • We see the simplest shape possible

11. Proximity • When objects are close together, we tend to perceive them as groups

13. Similarity • When similar and dissimilar objects are mingled, we see similar objects as groups

15. Closure • When we see a familiar pattern or shape w/missing parts, we fill in the gaps

17. Continuity • We tend to see continuous patterns, not disrupted ones

19. Figure and Ground • Discrimination between a figure and its background

21. Invariance • Simple geometrical objects are recognized independent of rotation, translation, and scale; as well as several other variations such as elastic deformations, different lighting, and different component features.

22. Other Interesting Perception Techniques

23. Count the number of “F’s” FEATURE FILMS ARE THE RE- SULT OF YEARS OF SCIENTI- FIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS

24. Answer: 6 Most people see 3, but don’t notice the f’s on OF. It appears that we process those f’s as v’s. FEATURE FILMS ARE THE RE- SULT OF YEARS OF SCIENTI- FIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS

25. Rene Magritte’s “The Human Condition” • Forcefully demonstrates the paradoxes of perception through painting

28. Size Constancy

29. The Blakemore-Sutton Effect First, judge whether these two grating have the same size bars.

30. Look back and forth across the central bar.? Count to about 45 second and then press the mouse. The Blakemore-Sutton Effect

31. Do the gratings still have the same bar size? The Blakemore-Sutton Effect

32. Simultaneous Contrast

33. PixelizedFamous Person

34. Induced Motion: Does the dot appear to move?

35. Motion Parallax: As we move, objects that are closer to us move farther across our field of view than do objects that are in the distance. 

36. Mueller-Lyer Illusion

37. Ouchi Apparent Motion Illusion

38. QQQQQQQQQQQQQQQPQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQ

39. QQQQQQQQQQQQQQQPQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQ

40. Optical Illusion (Thanks Zach) • http://www.youtube.com/watch?v=vzSRVgF501M&feature=related