Explain its significance

• What is the definition of absolute threshold?

  Minimum stimulus intensity detected 50% of the time
• What is the difference threshold in sensory perception?

  Amount of change in stimulus intensity required for JND
• What is the absolute threshold in sensory perception?

  Minimum stimulus intensity that can be detected
• What are the key differences between absolute and difference thresholds?

  • Absolute Threshold:
  • Minimum stimulus intensity detected
  • Measured by smallest intensity
  • Example: Softest sound heard

  
  

  • Difference Threshold:
  • Change in stimulus intensity for JND
  • Measured by difference in intensity
  • Example: Difference between two weights
• What does SDT consider in addition to sensitivity?

  Response bias
• What happens to our ability to detect stimuli as intensity increases?

  It increases, allowing for reliable detection
• How is the difference threshold measured?

  By the difference in intensity
• What does signal detection theory (SDT) help us understand?

  How we make decisions about signal presence
• What is the significance of stimuli below the absolute threshold?

  They are generally undetectable, termed subliminal stimuli
• Why is response bias important in signal detection theory?

  It affects how we interpret signals
• What are misses in signal detection theory?

  Failing to detect a present signal
• How does the absolute threshold relate to perception?

  It indicates the minimum stimulus needed for detection
• How does SDT differ from absolute threshold?

  SDT focuses on decision-making processes
• What are the key concepts of absolute threshold and difference threshold?

  • Absolute Threshold: Minimum stimulus for detection
  • Difference Threshold: Minimum change needed to notice a difference
• What is the significance of correct decisions in signal detection theory?

  They indicate effective signal detection
• What are false alarms in the context of SDT?

  Claiming a signal is present when it's not
• How can the difference threshold be illustrated with blocks?

  By adding blocks until the pile is noticeably bigger
• How can understanding absolute threshold enhance signal detection theory?

  It provides a baseline for detection capabilities
• In a noisy environment, how might response bias affect signal detection?

  It may lead to more false alarms
• What are the three main methods to measure absolute thresholds?

  Method of Limits, Constant Stimuli, Adjustment
• What are the three labels on the x-axis of the graph?

  Low, Absolute threshold, Medium
• How does the Method of Adjustment work?

  • Participants adjust stimulus intensity
  • Matches their perception
• What are the pros and cons of the Method of Limits?

  Pros:

  • Quick and easy to administer

  
  

  Cons:

  • Subject to bias
  • May miss threshold fluctuations
• What is the relationship between absolute threshold and sensory perception?

  • Absolute threshold indicates minimum stimulus intensity
  • It affects detection ability as intensity increases
  • It defines boundaries for detectable and undetectable stimuli
• What does the term "signal presence" refer to?

  Presence or absence of a specific stimulus
• What role does sensitivity play in signal detection theory?

  Sensitivity determines the ability to detect signals
• How does the Method of Limits work?

  • Gradually increases or decreases stimulus intensity
  • Determines detection or non-detection
• What does the absolute threshold test for our senses?

  How bright a light must be to be seen
• What is the relationship between absolute threshold and stimulus intensity?

  • Absolute threshold is the minimum intensity
  • Detected 50% of the time
  • Important for understanding sensory perception
• What are the pros and cons of the Method of Adjustment?

  Pros:

  • Very quick and easy to understand

  
  

  Cons:

  • High potential for bias
  • No direct perception evidence
• How does understanding response bias improve signal detection?

  It helps refine decision-making strategies
• How is the absolute threshold measured?

  By the smallest intensity
• What is the y-axis label of the graph?

  Percentage of correct detections
• How does the Method of Constant Stimuli work?

  • Presents various stimulus intensities in random order
  • Calculates detection probability
• What role does the absolute threshold play in sensory perception?

  It determines when a stimulus is first detected
• What does the term "detection threshold" refer to?

  It is another name for absolute threshold
• What detection rate is associated with subliminal stimuli?

  Around 50% detection rate
• What is the y-axis label of the graph?

  Percentage of correct detections
• What are the three labels on the x-axis of the graph?

  Low, Absolute threshold, Medium
• What are the key features of the graph that demonstrate the concept of subliminal stimuli?

  • The graph shows a region between the low and absolute thresholds where the percentage of correct detections is below 100%
  • This region represents the zone of subliminal stimuli, where stimuli are sometimes detected but not always
  • The sharp increase in detection rate around the absolute threshold indicates the transition from subliminal to supraliminal stimuli