Waking Consciousness • Consciousness • our awareness of ourselves and our environments
Waking Consciousness • Selective Attention • focusing of consciousness on a particular stimulus • as in the cocktail party effect (the ability to attend selectively to only one voice among many). • At the level of conscious awareness, whatever has your attention pretty much has your undivided attention. • Note the “change blindness” experiment on page 205 – most people did not notice when the person giving them directions changed to another person.
Forms of Consciousness Consciousness, modern psychologists believe, is an awareness of ourselves and our environment. Bill Ling/ Digital Vision/ Getty Images Stuart Franklin/ Magnum Photos AP Photo/ Ricardo Mazalan Christine Brune
Inattentional Blindness Inattentional blindness refers to the inability to see an object or a person in our midst. Simons & Chabris (1999) showed that half of the observers failed to see the gorilla-suited assistant in a ball passing game. Daniel Simons, University of Illinois
Change Blindness Change blindness is a form of inattentional blindness in which two-thirds of individuals giving directions failed to notice a change in the individual asking for directions. © 1998 Psychonomic Society Inc. Image provided courtesy of Daniel J. Simmons.
Sleep and Dreams • Biological Rhythms • periodic physiological fluctuations • Circadian Rhythm • the biological clock • regular bodily rhythms, such as of wakefulness and body temperature, that occur on a 24-hour cycle • Bright light helps reset our biological clocks