Psychological Abnormalities - AP Psychology

Pyrophobia and arachnophobia are each fears of a specific stimulus. Pyrophobia (from the Greek "piras") is the fear of fire, while arachnophobia (from the Greek "arachni") is the fear of spiders. Because they are fears of a specific stimulus, they are specific phobias as opposed to social phobias.

Trichotillomania is compulsive hair-pulling, including eyebrows and eyelashes. It is classified as an impulse-control disorder, not an anxiety disorder.

Post-traumatic stress disorder develops after a person is exposed to one or more traumatic events, including war, injury, assault, and natural disasters. PTSD is characterized by recurring flashbacks of the traumatic event, nightmares, hyperarousal, and high levels of anxiety.

Although many children and adolescents may suffer from generalized anxiety disorder (GAD), it is generally not diagnosed until later in development. The other four choices are more frequently diagnosed in those under 18 years old.

Anxiety disorders are characterized by an unreasonable fear or anxiety. Specific phobias, a category of anxiety disorder, are a persistent and irrational fear of a specific object, activity, or situation.

Obsessions are recurrent thoughts, images, or impulses, while compulsions are recurrent, irresistible actions. A somatoform disorder occurs when there is no identifiable physical cause to explain physical symptoms. Dissociative disorders involve a splitting apart of past experiences from present memory or consciousness. Impulse control disorders are an inability to resist an impulse to perform an action that is harmful.

Attention deficit hyperactivity disorder (ADHD) is not specifically an anxiety disorder; it involves hyperactive, inattentive, and impulsive symptomology. The other answer choices are all types of diagnosable anxiety disorders.

A specific phobia is a fear that is directly focused on some particular trigger, object, or situation. For instance, someone who has a phobia of being the dark will always experience a heightened sense of fear whenever they are in the dark. This is much different from generalizated anxiety, where the triggers for this kind of fear are unclear and the anxiety occurs more generally.

Agoraphobia is the fear of open spaces . People who have this condition often want to stay within the closed space of their house. This phobia is often associated with panic disorder.

Claustrophobia is the fear of closed spaces, acrophobia is the fear of heights, arachnophobia is the fear of spiders, and mysophobia is the fear of germs.

Generalized anxiety disorder (GAD) is a mental disorder characterized by excessive worrying. Its symptoms include unproductive worrying, trouble stopping the worry process, worry about every part of daily life, and muscle tension and fatigue.

Flashbacks are one of the most prevalent symptoms of a different disorder—PTSD, or post-traumatic stress disorder.

Avoidance of what causes the anxiety is an overarching behavioral response that comes with anxiety disorders. For example, the behavioral response of avoidance in agoraphobia would be not going in to crowded places.

Separation anxiety disorder is most common in young children, and is characterized by a consistent refusal to do things that require separation from loved ones. A common symptom is school refusal, which requires an intervention to be designed by a school-based mental health clinician (e.g., school psychologist).

PTSD is an anxiety disorder characterized by flashbacks to stressful life events, such as service in a war. The answer choices "supportive home environment" and "healthy sexual relationships" are actually the opposite of two other common sources of PTSD-- child abuse and sexual assault. "Fear of a specific animal" is characteristic of a phobia and an "obsession that the environment is filled with dirty germs" is characteristic of OCD.

The amygdala is the part of the brain that is most active when you experience fear, so it is especially active in people with anxiety disorders. As for the other answers, the cerebellum controls fine motor skills, the temporal lobe controls hearing and language, the basal ganglia directs intentional movements, and the pituitary gland releases hormones.

Preparedness theory holds that some fears, such as snakes and spiders, are more common than others because those stimuli were serious threats to their ancestors. Therefore, people are innately, biologically predisposed to fear these things more than other things (i.e. phobias of snakes are more common than phobias of butterflies). Preparedness theory does not define what makes certain people more likely to develop phobias ("people are born prepared to develop phobias of certain things"); it merely explains why, overall, the human race is more afraid of some things than others. As for the other three answers, preparedness theory does not have to do with phobia treatment, phobias can be cured, and phobias do not help prepare someone for other fears.

Behavioral psychology is very focused on learned behaviors (conditioning) and would use the girl as an example of a learned phobia. If explaining a phobia, biopsychology would likely talk about chemicals in the brain, developmental psychology about parenting and lifespan factors, social psychology about interpersonal relationships, and psychodynamic psychology about unconscious conflicts.

Claustrophobia is the fear of small, tight spaces, so someone with claustrophobia would likely not want to climb through a narrow cave. Agoraphobia is the fear of public spaces, arachnophobia is the fear of spiders, social phobia is the fear of social situations and embarassment, and mysophobia is the fear of germs and dirt.

Agoraphobia is the fear of being in places or situations from which escape might be difficult or embarrassing. In other words, it is the fear of open spaces.

"GABA" (Gamma-Amino Butyric Acid) is an inhibitory neurotransmitter, and is found throughout the neurons of the cortex. GABA deficiencies have been linked to anxiety disorders, and some anxiolytics (anxiety medications) work by increasing quantities of GABA available at neuron receptor sites.

The other choices are incorrect. "Serotonin" is primarily associated with regulating mood, appetite, and sleep, and is also implicated in nociception (sensation of pain). This neurotransmitter plays a major role in depression, but not necessarily anxiety. "Dopamine" is a major component of the reward system, and plays a role in arousal, motivation, motor control. "Norepinephrine" is mainly involved in preparing the body for action, for instance the 'flight or fight' response. It increases vigilance and alertness, focuses attention and improves memory recall and formation. Raised levels of norepinephrine can result in anxiety by way of increased stress. Last, "acetylcholine" is associated with motor neurons, and provides signals for the body to contract muscles. Drugs affecting this neurotransmitter thus may lead to paralysis or convulsions. In the brain acetylcholine plays a role in attention, arousal, and motivation.

Liz frequently experiences unexpected periods of intense fear and discomfort accompanied by increased heart rate and respiration, shakiness, sweating, and fear of losing control. These are the symptoms of a panic attack. Panic can be defined as an extreme sense of fear with an extreme stress response. Panic attacks are periods in which the person feels extreme fear and discomfort and may experience a pounding heart, shortness of breath, shakiness, and sweating. Many times, the person is also afraid that they will lose control. A panic disorder is characterized by frequent, unexpected panic attacks and social limitations to avoid the onset of such attacks.