Treatment and Health Psychology

Psychotherapy Approaches

Major psychotherapy orientations differ in their assumptions about the origins of distress and mechanisms of change. Psychodynamic therapy (rooted in Freud) emphasizes unconscious conflicts and early childhood experiences. Modern variants are time-limited, focusing on interpersonal patterns. Key concepts include transference (patient projects feelings onto the therapist) and countertransference (therapist's reactions to the patient). Humanistic therapy — Rogers's person-centered therapy — holds that distress arises from incongruence between the real and ideal self, often from conditional positive regard in childhood. The therapist provides unconditional positive regard, empathy, and genuineness. Behavioral therapy targets maladaptive behaviors directly using classical conditioning (exposure, systematic desensitization, aversion therapy) and operant conditioning (token economies, contingency management). It is especially effective for phobias and OCD. Cognitive therapy (Beck) and cognitive-behavioral therapy (CBT) identify and restructure distorted automatic thoughts, underlying assumptions, and core schemas. Cognitive distortions include catastrophizing, all-or-nothing thinking, and personalization. CBT is the most extensively researched psychotherapy and a first-line treatment for depression and anxiety disorders. Third-wave therapies integrate mindfulness and acceptance: dialectical behavior therapy (DBT, for borderline personality disorder), acceptance and commitment therapy (ACT), and mindfulness-based cognitive therapy (MBCT).

Biomedical Therapies

Biomedical interventions target the biological substrates of mental disorders. Pharmacotherapy includes antidepressants (SSRIs block serotonin reuptake; also SNRIs, MAOIs, tricyclics), anxiolytics (benzodiazepines enhance GABA-A receptor function; buspirone), mood stabilizers (lithium, anticonvulsants for bipolar disorder), antipsychotics (first-generation/D2 antagonists for positive symptoms; second-generation/atypicals targeting serotonin and dopamine for positive and negative symptoms), and stimulants (methylphenidate for ADHD). Electroconvulsive therapy (ECT) induces a brief seizure under anesthesia and is highly effective for severe, treatment-resistant depression, especially with catatonic or psychotic features. Side effects include short-term memory loss. Transcranial magnetic stimulation (TMS) delivers noninvasive magnetic pulses to the dorsolateral prefrontal cortex for treatment-resistant depression, with fewer cognitive side effects than ECT. Psychosurgery (e.g., cingulotomy for severe OCD) is exceedingly rare and reserved as a last resort.

Treatment Effectiveness

Evaluating treatment outcomes requires distinguishing efficacy (does the treatment work under ideal, controlled conditions, as in randomized controlled trials?) from effectiveness (does it work in real-world clinical settings with diverse, comorbid patients?). The therapeutic alliance — the collaborative bond between therapist and patient — is one of the strongest predictors of positive outcomes across all therapeutic modalities. The common factors model proposes that shared elements across therapies (empathy, alliance, a plausible rationale, a therapeutic ritual) account for much of treatment success, contributing to the dodo bird verdict that all bona fide therapies produce roughly equivalent outcomes. However, specific therapies demonstrably outperform others for particular disorders: exposure therapy for phobias, CBT for panic disorder, and DBT for borderline personality disorder. Empirically supported treatments (ESTs) are those whose efficacy has been demonstrated in rigorous controlled trials.

Health Psychology and the Biopsychosocial Model

Health psychology investigates how biological, psychological, and social factors interact to influence health and illness. Engel's biopsychosocial model (1977) challenged the prevailing biomedical model by asserting that health outcomes cannot be understood through biology alone. Biological factors include genetics, pathogens, and physiological processes. Psychological factors encompass cognition, emotion, motivation, and health beliefs. Social factors include socioeconomic status, culture, family, and social support. The model explains why low SES predicts worse cardiovascular outcomes: financial strain (social) generates chronic stress (psychological), which elevates cortisol and inflammatory markers (biological), producing atherosclerosis. This integrated framework is foundational for understanding health disparities, treatment adherence, and the mind-body connection.

Stress, Coping, and Health Outcomes

Stress is the physiological and psychological response to perceived threats or demands. Selye's general adaptation syndrome (GAS) describes three stages: alarm (sympathetic nervous system activation, HPA axis cortisol release), resistance (sustained arousal and adaptation), and exhaustion (depleted resources, increased disease vulnerability). Lazarus's transactional model emphasizes cognitive appraisal: primary appraisal (Is this a threat?) and secondary appraisal (Can I cope?). Coping strategies divide into problem-focused (addressing the stressor directly) and emotion-focused (managing the emotional response). Problem-focused coping is generally more adaptive when the stressor is controllable; emotion-focused coping is more adaptive when it is not. Allostatic load is the cumulative physiological wear and tear from chronic stress, linked to cardiovascular disease, immune suppression, and accelerated aging. The stress-illness connection operates through direct physiological pathways (elevated catecholamines and cortisol) and indirect behavioral pathways (poor sleep, substance use, reduced treatment adherence).

Behavior Change and Adherence

Health behavior theories explain why people engage in — or fail to engage in — health-promoting behaviors. The Health Belief Model posits that behavior depends on perceived susceptibility, perceived severity, perceived benefits, perceived barriers, cues to action, and self-efficacy. The Theory of Planned Behavior adds subjective norms and perceived behavioral control as predictors of behavioral intention. The Transtheoretical Model (Stages of Change) describes progression through precontemplation, contemplation, preparation, action, maintenance, and (potentially) relapse — a spiral, not a linear path. Adherence (formerly compliance) is the degree to which a patient's behavior matches medical recommendations. Poor adherence is a major cause of treatment failure. Key predictors include the complexity of the regimen, side effects, the quality of the patient-provider relationship, self-efficacy, social support, and cultural beliefs about illness and treatment.

How it works

Treatment and health psychology sits at the intersection of clinical intervention and health behavior. Psychotherapy restructures maladaptive cognitions (CBT), extinguishes conditioned fear through exposure, and builds the therapeutic alliance (all modalities). Biomedical therapies target neurotransmitter systems and neural circuits directly: SSRIs elevate synaptic serotonin, benzodiazepines potentiate GABA, and antipsychotics block D2 receptors. Health psychology uses the biopsychosocial model to explain why people get sick (stress pathways, allostatic load), how they cope (problem- vs. emotion-focused strategies), and why they follow or abandon medical advice (health beliefs, self-efficacy, perceived barriers). These domains converge in the MCAT: a passage may describe a depressed patient with serotonergic dysregulation undergoing CBT while taking an SSRI, with social support moderating the treatment outcome.

How it works

Treatment and health psychology sits at the intersection of clinical intervention and health behavior. Psychotherapy restructures maladaptive cognitions (CBT), extinguishes conditioned fear through exposure, and builds the therapeutic alliance (all modalities). Biomedical therapies target neurotransmitter systems and neural circuits directly: SSRIs elevate synaptic serotonin, benzodiazepines potentiate GABA, and antipsychotics block D2 receptors. Health psychology uses the biopsychosocial model to explain why people get sick (stress pathways, allostatic load), how they cope (problem- vs. emotion-focused strategies), and why they follow or abandon medical advice (health beliefs, self-efficacy, perceived barriers). These domains converge in the MCAT: a passage may describe a depressed patient with serotonergic dysregulation undergoing CBT while taking an SSRI, with social support moderating the treatment outcome.

Comparisons

• Biology (Neuroscience): Neurotransmitter systems targeted by psychopharmacology — serotonin (SSRIs), dopamine (antipsychotics, stimulants), GABA (benzodiazepines), and norepinephrine (SNRIs). Know receptor subtypes, reuptake mechanisms, and agonist vs. antagonist pharmacology.
• Research Methods: Distinguishing efficacy trials (randomized controlled trials with strict inclusion criteria) from effectiveness studies (naturalistic designs with diverse, comorbid samples). Placebo effects, double-blinding, and the unique challenge of blinding in psychotherapy research are classic passage material.
• Behavioral Sciences: Application of classical conditioning principles (exposure therapy, aversion therapy), operant conditioning (token economies, contingency management), and observational learning (modeling, social skills training). The Health Belief Model and Transtheoretical Model serve as theoretical lenses for evaluating public health interventions.
• Sociology: Social determinants of health — socioeconomic status, race, ethnicity, gender, and access to care — mediate treatment engagement and outcomes. The sick role (Parsons) and the process of medicalization provide sociological context for understanding when and why people seek treatment.

Common confusions

• Conflating psychoanalysis with all psychodynamic therapy. Modern psychodynamic therapy is brief, conducted face-to-face, and focuses on interpersonal patterns rather than exhaustive childhood reconstruction. The MCAT distinguishes these.
• Assuming ECT is a barbaric last resort for all depression. ECT is a first-line treatment for severe depression with catatonic or psychotic features and remains one of the most effective treatments in all of psychiatry.
• Believing SSRIs increase serotonin release. SSRIs block serotonin reuptake at the presynaptic terminal; they do not increase neurotransmitter release. Confusing reuptake inhibition with release is a classic MCAT pharmacology trap.
• Treating CBT and behavioral therapy as interchangeable terms. Behavioral therapy targets maladaptive behaviors directly (exposure, reinforcement). CBT adds cognitive restructuring — identifying and challenging automatic thoughts and schemas. The MCAT tests this distinction explicitly.
• Using efficacy and effectiveness as synonyms. Efficacy refers to how well a treatment works under ideal, controlled RCT conditions. Effectiveness refers to how well it works in real-world clinical practice. A highly efficacious intervention may have low effectiveness due to practical barriers, patient heterogeneity, or comorbidity.
• Viewing the Health Belief Model and Transtheoretical Model as competing theories. They address different questions: the HBM explains the likelihood of taking action based on specific health beliefs, while the TTM describes readiness for change as a stage-based process. The MCAT tests your ability to select and apply the correct model to the given passage context.

Quick review

• Psychodynamic (unconscious conflicts, transference) vs. humanistic (person-centered, unconditional positive regard) vs. behavioral (exposure, reinforcement) vs. cognitive/CBT (restructure automatic thoughts, cognitive distortions) vs. third-wave (DBT, ACT, mindfulness).
• Biomedical therapies: SSRIs (block serotonin reuptake), benzodiazepines (GABA-A agonists), antipsychotics (first-gen D2 antagonists; second-gen atypicals), lithium (mood stabilization), ECT (severe depression with catatonic/psychotic features), TMS (dorsolateral prefrontal cortex stimulation).
• Efficacy (works in controlled RCTs) vs. effectiveness (works in real-world settings). Therapeutic alliance is the strongest common predictor of positive outcomes. Common factors model; dodo bird verdict.
• Biopsychosocial model (Engel, 1977): biological, psychological, and social factors interact to determine health outcomes — challenging the purely biomedical model.
• Stress: Selye's GAS (alarm → resistance → exhaustion). Lazarus: primary appraisal and secondary appraisal. Problem-focused vs. emotion-focused coping. Allostatic load as cumulative physiological cost of chronic stress.
• Health Belief Model (susceptibility, severity, benefits, barriers, self-efficacy, cues to action). Theory of Planned Behavior (attitudes, subjective norms, perceived behavioral control → intention). Transtheoretical Model (precontemplation, contemplation, preparation, action, maintenance, relapse).
• Adherence: influenced by regimen complexity, medication side effects, quality of patient-provider relationship, self-efficacy, social support, and cultural beliefs about illness and treatment.