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unconditioned reflex

unconditioned reflex

6.5
An automatic body response to a signal without learning
  • noun
  • /ˌʌnkənˈdɪʃənd ˈriːflɛks/
  • Specialized
translation icon : reflejo incondicionado
  • Babies are born with several unconditioned reflexes, such as sucking and grasping.

Examples

  • The knee-jerk reaction at the doctor is an example of an unconditioned reflex.

  • The unconditioned reflex of blinking protects the eyes.

  • An unconditioned reflex does not require any prior training or learning to appear.

  • An unconditioned reflex occurs without any prior learning.

  • An unconditioned reflex occurs automatically when a stimulus triggers a response without any learning.

  • Newborns exhibit several unconditioned reflexes, including sucking and grasping, right after birth.

  • When the doctor taps your knee, the sudden kick is an unconditioned reflex that requires no prior training.

Synonyms

reflex
vsunconditioned reflex
54 3.7

A quick action you do without thinking in response to something

stresses that it arises without previous learning or conditioning
reflex action
vsunconditioned reflex
2 3.4

A quick movement your body makes without thinking, for example pulling your hand from something hot

highlights absence of conditioning rather than learned behaviour
physiological reaction
vsunconditioned reflex
  • Specialized
1 4.5

An automatic body response to something that affects it, like sweating or a faster heartbeat

is narrower meaning specifically automatic reactions without prior conditioning
reflex response
vsunconditioned reflex
4.2

An automatic action your body makes without thinking when something touches or moves near you

specifies the lack of prior conditioning as the cause
reflexive response
vsunconditioned reflex
5.1

A quick action you do without thinking

focuses on being unconditioned rather than merely automatic
instinctive reflex
vsunconditioned reflex
  • Specialized
4.0

An automatic body response to a touch or sound that happens without thinking

emphasises absence of conditioning instead of general natural origin
innate reflex
vsunconditioned reflex
  • Specialized
4.1

An automatic action your body makes without being taught

specifies lack of learned conditioning rather than simply being natural
inborn reflex
vsunconditioned reflex
  • Specialized
3.5

An automatic action a baby does without learning

is about absence of conditioning rather than timing of appearance

Antonyms

conditioned reflex
  • Specialized
1 5.3

An automatic response learned when a neutral sound or sign is repeatedly paired with something that naturally causes it

How Conditioned

conditioned reflex
  • Specialized
1 5.3
unconditioned reflex
  • Specialized
6.5

Surface Forms

Morphology

unconditioned + reflex

The meaning is directly derivable from the constituents: 'unconditioned' specifies that something is not learned/occurs automatically and 'reflex' is an automatic bodily response, so together they mean an automatic response without prior conditioning. This adjective+noun composition is compositional and cross-linguistically common, so a B1 learner who knows both words will comprehend it.

Etymology

Unconditioned reflex combines unconditioned (meaning 'not trained') and reflex (an 'automatic' action). It names responses like a baby's sucking or the knee-jerk that happen on their own, so it means a reaction that occurs without any prior learning.