Summary: Sensory Analyses

Read the summary and the most important questions on Sensory Analyses

• Lesson 1 term 2

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• In what way is sensory different than analytical science?

  Humans are the measuring instruments. That means that they are:
  - Variable over time
  - Variable among themselves  
  - Very prone to bias

• How do you solve variability over time and variability among people themselves?

  Over time: multiple measurements over time.
  Among themselves: increase group size.

• How can you decrease bias?

  By minimalizing the psychological factors.

• What is the definition of physiological factors?

  Stimuli that interact when presented simultaniously,

• What are physological factors that can influence the outcome of a test??

  - Cross-adaptation
  - Cross-potentiation
  - Enhancement
  - Synergy
  - Supression

• What are the psychological factors that can influence the outcome of a test?

  - Expectation error
  - Habituation error
  - Stimulus error
  - Logical error
  - Halo effect
  - Order of presentation of samples
  - Mutual suggestion
  - Lack of motivation
  - Capriciousness vs. timidity

• What are physical condition that your results can be influenced by?

  - Fever/ cold
  - Poor dental hygiene
  - Emotional upset/stress
  - Smoking (30-60 minutes before)
  - Coffee (60 minutes)
  - Large meals (2 hours)
  - Make up, parfume

• What does the risk of adaptation mean?

  When stimuli are presented after each other it influences how they are perceived.

• What is the difference between cross-adaptation and cross-potentiation?

  With cross-adaptation a stimuli (sweetness level) is decreased in each following sample. 
  With cross-potentiation it is increased.

• What is an expectation error?

  That the information that is given will trigger preconceived ideas.