Final answer:
The major themes within the Psychodynamic Model are loss, immature defense mechanisms, and compensation for lost ego strength.
Step-by-step explanation:
The major themes within the Psychodynamic Model include loss, immature defense mechanisms, and compensation for lost ego strength. Loss refers to the experience of grief and mourning, which can influence an individual's psychological development. Immature defense mechanisms are unconscious protective behaviors that individuals may use to cope with anxiety and emotional distress. Compensation for lost ego strength involves the ego's attempts to restore balance and reduce anxiety when faced with conflicts between the id and superego.