*1.2.4. Behavioral inhibition*

Examining the temperament characteristics as the precursors of psychiatric disorders has been an important step in etiology research. The event mentioned as temperament and structurally inherited is defined as the predisposition that determines how the individual behaves against particular people in certain situations. It emerges in the very early period, remains constant at all times, and is influenced by biological factors. Behavioral inhibition is a temperament characteristic.

Behavioral inhibition is defined as avoiding shy, conducting behaviors in the newly entered environment or against newcomers (Kagan [11]). This behavior can be observed from the 8th month. Inhibition of behavior during infancy shows as a disgrace (crying, yelling), as shy and anxious behavior in a small childhood, and as a social recessive behavior in school age. The constancy of this temperament property has been proven in many studies until adulthood (Biederman et al. [12]; Gest [13]; Matheny [14]).

Children with behavioral inhibition according to Kagan show a low stimulation threshold in the amygdala and the hypothalamus, in particular, against foreign conditions. In addition, increased sympathetic stimulation was observed.

According to Kagan the children of individuals with panic disorder and agoraphobia showed more behavioral inhibition than healthy parents (Rosenbaum et al. [15, 16]). According to the results of two prospective studies, children with behavioral inhibition are in a high-risk group in terms of developing childhood anxiety disorder.

As a result, in children with fixed behavioral inhibition in different time periods, more anxiety disorder can be diagnosed, and more behavioral inhibition is observed in the children of individuals with anxiety disorder.
