How long must symptoms be present with a child age 7 to meet DSM-V-TR criteria to diagnose post traumatic stress disorder (PTSD)?

The PMHNP is assessing a child and expects that a 3 year old should be able to do the following developmental tasks:

When processing divorce, children/adolescent responses typically include all of the following except:

Consider Piaget’s stages of cognitive development. During which of the following age ranges do children acquire the ability to understand conservation as part of the Concrete Operations?   

A mother presents to your office today with her 2 year old child for initial evaluation. When you begin your assessment and ask what brings them to your office today, the mom begins with, “My 2-year-old child refuses toilet training and shouts ‘No!’ when given directions. What do you think is wrong?”  Your best response is to say:

 True or False: Cognitive Behavioral Therapy and SSRI medication have both been shown to be efficacious treatments for Obsessive Compulsive Disorder in the adolescent population.

True or False – According to Clinical Perspectives Article -Agitation or aggressive behaviors can be associated with a varietyof etiologies: mental health conditions, substance use or toxic substanceexposure, and/or underlying medical conditions like infections, andneurologic and metabolic disorders.

A PMHNP uses cognitive-behavioral therapy for a patient diagnosed with anorexia nervosa. Which statement by the PMHNP supports this type of therapy?

According to the DSM-V-TR, to be diagnosed with Gender Dysphoria in Children:  

A 26-month-old displays negative behavior, refuses toilet training, and often says, “No!”  According to Erikson, which psychosocial crisis is evident?