Psychology Chapter 2 Questions

Explanation: 1. ⚡️ Sensation is the basic process where sensory receptors detect stimuli and send nerve impulses to the brain for processing. 2. 🧩 Perception involves the brain organizing and interpreting sensory information into meaningful patterns and experiences. 3. 🎵 Hearing individual sounds is sensation, while organizing them into melodies involves perceptual processes. 4. 🎯 The absolute threshold is operationally defined as the minimum stimulation level detectable 50% of the time. 5. 🔍 The difference threshold is the minimum detectable change in stimulation, also called just noticeable difference. 6. 📊 Weber's law states that the JND is a constant proportion of the original stimulus intensity. 7. 📉 Sensory adaptation reduces responsiveness to constant stimuli, helping detect new changes in environment. 8. 🔍 Attention selectively focuses conscious awareness on certain stimuli while filtering out others. 9. 🔍 Focus contains stimuli that are clearly perceived and in the center of conscious awareness. 10. 🌫 Margin contains stimuli that are dimly perceived at the edges of conscious awareness. 11. 💡 Larger, brighter stimuli naturally capture attention more effectively than smaller, dimmer ones. 12. 📈 Repetition makes stimuli more noticeable by increasing their frequency in the perceptual field. 13. ✨ Novel stimuli create contrast with familiar surroundings, making them stand out and capture attention. 14. ⚠️ Movement evolutionarily signals potential threats, causing reflexive attention to moving objects. 15. 📱 Set refers to psychological readiness to perceive certain types of sensory input based on expectations. 16. 🎯 People selectively attend to environmental stimuli that can satisfy their current needs and motives. 17. 🎯 Figure-ground perception involves distinguishing objects (figures) from their backgrounds (ground). 18. 📏 Contours are created by sharp changes in brightness or color that help separate figures from backgrounds. 19. 📍 The proximity law states that spatially or temporally close items are perceived as belonging together. 20. 🎭 The similarity law indicates that items sharing characteristics tend to be grouped together perceptually. 21. ⚖️ Good figure law drives organization toward balanced, symmetrical patterns that include all elements. 22. 〰️ Continuation law describes perceiving lines as smoothly continuing in their established direction. 23. 🕳 Closure law explains how perception fills in missing information to create complete, meaningful patterns from incomplete stimuli. 24. 📏 Depth perception allows judging three-dimensional distances from two-dimensional retinal images. 25. 👀 Retinal disparity uses differences between left and right eye images to gauge object distance. 26. 👀 Convergence measures eye muscle tension as eyes turn inward to focus on closer objects. 27. 🔍 Accommodation involves lens shape changes for focusing, providing depth cues through muscle feedback. 28. 🚗 Motion parallax uses relative speed differences of passing objects to judge their distances. 29. 🚂 Linear perspective creates depth perception as parallel lines appear to converge with distance. 30. 🌫 Aerial perspective uses clarity differences, with distant objects appearing hazier than near ones. 31. 🌿 Texture gradient provides depth cues through detail visibility - more details indicate closer objects. 32. 📏 Size constancy interprets retinal size changes as distance variations rather than actual size changes. 33. 📖 Shape constancy maintains perceived object shapes despite viewing angle changes that alter retinal images. 34. 💡 Brightness constancy maintains perceived object brightness despite actual illumination changes in environment. 35. 🎭 Visual illusions occur when normal perceptual processes misinterpret visual cues, creating false perceptions. 36. 📏 The moon illusion results from misapplying size constancy, making the horizon moon appear larger. 37. 📏 The Müller-Lyer illusion shows how context cues can make identical line lengths appear different. 38. 🔄 Sensory adaptation helps organisms focus on important environmental changes while ignoring constant, irrelevant stimuli. 39. ⚡️ Transduction converts various forms of physical energy into neural signals the brain can process. 40. 🎯 The same attention-determining factors (size, brightness, novelty, movement, expectancy, needs) influence figure-ground organization.