Psychology is the scientific study of human behavior, mental processes, emotions, and personality. It is an important subject for competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS.
Identify the FALSE statement about the neurons in are V1:
A
Neurons in V1 adapt to visual stimulation, so their response to a stimulus increases over time with repeated presentation
B
The localized receptive fields and binocular characteristics of V1 neurons correlate very well with the perceptual characteristics of perceptual after-effects
C
The neurons in area V1 are prime candidates for the mechanisms that underlie visual after-effects in people
D
Images of complex objects trees; houses, people are initially analyzed by mechanisms that respond to their local physical characteristics and have no connection with the identity of the objects themselves
Correct Answer:
Neurons in V1 adapt to visual stimulation, so their response to a stimulus increases over time with repeated presentation
Which of the following is NOT an example of a genuine after-effect?
A
After running your fingers over fine sandpaper, medium sandpaper feels coarser (and vice versa)
B
After listening to a high tone for a while, a medium auditory tone appears higher
C
Holding your hand under running cold (or hot) water before testing the temperature of baby’s bath water will lead you to misperceive how comfortable the water will be for the baby
D
After eating chocolate, orange juice tastes more tart
Correct Answer:
After listening to a high tone for a while, a medium auditory tone appears higher
One of the following statements is FALSE-but which one?
A
A system of channels can only signal preferred orientation of any single channel
B
Perceptual information is likely to be merged via a process that combines the activities across all channels
C
As part of the process of synthesis, channel activities are likely to be weighted according to the level of activity in each channel
D
The merging process may find the ‘center of gravity’ of the distribution of activity
Correct Answer:
A system of channels can only signal preferred orientation of any single channel
Which TWO of the following statements are true of simultaneous contrast illusions? 1. In the simultaneous tilt illusion, vertical stripes appear tilted away from the tilt of their surrounding stripes. 2. In the luminance illusion, a grey patch appears darker when surrounded by a dark area than when surrounded by a light area. 3 A purple patch appears slightly closer to blue when surrounded by red, and closer to red when seen against a blue background. 4. Visual illusion effect only exist for motion.
A
1 & 3
B
2 & 3
C
3 & 4
D
2 & 4
Correct Answer:
1 & 3
Which of the following is NOT the case in terms of serial and parallel processing models?
A
The serial processing model is now known to be inadequate, or at least incomplete
B
The serial model has been replaced, at or at least modified, firstly by the parallel processing model and then, most recently, by the recurrent processing model
C
According to the parallel processing model, analysis of different stimulus attributes, such as identity and location, proceeds simultaneously along different pathways, even from the earliest stages
D
According to the parallel processing model, the fact that there are cones and rods in the retina is evidence for multiple mechanisms that extract information in series from the retinal image
Correct Answer:
According to the parallel processing model, the fact that there are cones and rods in the retina is evidence for multiple mechanisms that extract information in series from the retinal image
Which sensory receptor is found in greatest numbers in the skin?
A
Touch receptors
B
Warmth receptors
C
Pressure receptors
D
Pain receptors
Correct Answer:
Pain receptors
The tilt illusion, the luminance contrast effect and the color illusion are examples of what type of contrast effect?
A
Before-effects
B
After-effects
C
Waterfall illusions
D
Perceptual illusions
Correct Answer:
After-effects
Photoreceptors are the______sensitive cells that line the retina.
A
Wide band
B
Narrow band
C
Combination
D
Light
Correct Answer:
Light
Differences thresholds:
A
Occur when we can first detect some stimulus
B
Occur when we can detect the change in the intensity of a stimulus
C
Depend on the energy necessary to stimulate a sensory receptor
D
Are measured in judgmental Normal Differences
Correct Answer:
Occur when we can detect the change in the intensity of a stimulus
The idea that the amount of change in a stimulus necessary to produce a JND is a constant proportion of the stimulus intensity is called:
