{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

topic02a_handouts - Psychology 253 Sensation and Perception...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Psychology 253: Sensation and Perception Fall 2007 Dr. M. J. Wenger Topic 02: Measurement in Sensory Science Part 1 Critical Questions A Quick Reminder Electromagnetic Spectrum Radiometry and Photometry P = w R, 0 w 1 1 0 Light: Three Possibilities Light at the source Reflected light Absorbed light Refracted light Size of the image: basics y d x Size of the image: geometry Size of the image: calculations b tan (1 ) = d -1 b 1 = tan d -1 b = 2 tan d A Simple Example v=3.0 h = 2.5 Half dimensions: h = 1.25, v = 1.50 70.0 Measuring Psychological States: Three Challenges Fundamental Concept: Threshold Psychometric Function: Detection Psychometric Function: Discrimination Percentage Judged "Brighter" Intensity of stimulus 1 Intensity of stimulus 2 Putting it Together: Scaling Expected Form of the Relationship Another Clue: E. H. Weber Fechner's Law Fechner's Law: Example Fechner's Three Methods ...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online