This can cause differences in observable symptoms as well as the magnitude of those symptoms.

For instance, a plant may harbor a viral infection and show no observable symptoms yet still be negatively affected.

The only other observable symptom was slightly increased thirst.

This means that observable symptoms can serve as the starting for a process of discovering contributing factors and related signs, symptoms, and adaptations.

Descriptive psychiatry is based on the study of observable symptoms and behavioral phenomena rather than underlying psychodynamic processes.

Its focus on observable symptoms contrasts with dynamic psychiatry's emphasis on emotional processes and the mental mechanisms underlying them.

These subtypes have come under some criticism for not taking account of the full spectrum of observable symptoms (the phenotypes.)

Behavioral therapy approaches relied on principles of operant conditioning, classical conditioning and social learning theory to bring about therapeutic change in observable symptoms.

According to Handy, the observable symptoms of conflict in an organisation will be:

The following observable symptoms can indicate ovulation: