Chapter 3 Part 2, Basic Concepts, Drugs and Consciousnessx - Chapter 3 Consciousness and the Two-Track Mind PSYCHOLOGY David G Myers C Nathan DeWall

Chapter 3 Part 2, Basic Concepts, Drugs and Consciousnessx

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Consciousness and the Two-Track Mind PSYCHOLOGY David G. Myers C. Nathan DeWall Twelfth Edition Chapter 3
Consciousness and Selective Attention Selective attention Focusing conscious awareness on a particular stimulus Inattentional blindness Failure to see visible objects when attention is directed elsewhere Change blindness Failure to notice changes in the environment, a form of inattentional blindness
Selective Attention and Accidents Rapid toggling between activities is common today. Sixty percent of U.S. drivers read or sent a text message or viewed a phone map while driving in the last month (Glicklich, 2016). Multitasking distracts brain resources allocated to driving; brain activity decreases, on average, 37 percent when conversation occurs (Just et al., 2008). Cell-phone use increases accident risk fourfold. An 18-month video camera study of the driving habits of long-haul truckers found that when they were texting, their risk of a collision increased 23 times (Olson et al., 2009).
Change Blindness While a man (in red) provides directions to a construction worker, two experimenters rudely pass between them carrying a door. During this interruption, the original worker switches places with another person wearing different- colored clothing. Most people, focused on their direction giving, do not notice the switch (Simons & Levin, 1998).
Dual Processing: The Two-Track Mind Dual processing Information is often simultaneously processed on separate conscious (explicit) and unconscious (implicit) tracks Perceptions, memory, attitudes, and other cognitions are affected Parallel processing Processing many aspects of a problem simultaneously; the brain’s natural mode of information processing for many functions Sequential processing Focusing conscious awareness on a particular stimulus
When the Blind Can “See” In this compelling demonstration of blindsight and the two-track mind, researcher Lawrence Weiskrantz trailed a blind-sight patient down a cluttered hallway Although told the hallway was empty, the patient meandered around all the obstacles without any awareness of them
Drugs and Consciousness Psychoactive drug: A chemical substance that alters perceptions and moods Types of Psychoactive Drugs Depressants Stimulants Hallucinogens
Depressants (part 1) Depressants Calm neural activity and slow body functions Examples: Drugs such as alcohol, barbiturates (tranquilizers), and opiates Alcohol Acts as a disinhibitor Reduces self-awareness and self-control; produces myopia Slows neural processing; potent sedative when paired with sleep deprivation Disrupts memory and impairs growth of synaptic connections

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