Biological, Cognitive, and Sociocultural Approaches to Depression and Health Problems

Comprehensive vocabulary flashcards covering the biological, cognitive, and sociocultural etiologies and treatments of Major Depressive Disorder (MDD), as well as epidemiological principles regarding prevalence and health issues.

Genetic Inheritance

The process by which genes are passed from parents to children, referring to the extent to which an offspring's behavior or physical traits are inherited.

Gene

A specific segment of DNA found on a chromosome that acts as the basic unit of heredity determining characteristics of offspring.

Concordance Rates

The probability that one individual in a pair (such as a twin pair) possesses a trait given that the other individual has it.

Monozygotic (MZ) Twins

Identical twins who share $100\%$ of their genetic makeup.

Dizygotic (DZ) Twins

Non-identical (fraternal) twins who share approximately $50\%$ of their genes.

Diathesis-Stress Model

A gene-environment interaction theory asserting that biological factors create a predisposition (diathesis) that requires external environmental triggers (stressors) to manifest as a psychological disorder.

5-HTT Gene

The serotonin-transporter gene involved in mood regulation, possessing short and long allele variants that moderate vulnerability to depression under stress.

Neurotransmission

The chemical and electrical process through which informational signals are relayed from one neuron to another across a synapse.

Action Potential

The electrical impulse generated in the presynaptic neuron that travels down the axon to stimulate the release of neurotransmitters.

Axon Terminal

The specialized structure situated at the distal end of a sender neuron where neurotransmitters are stored and released.

Synaptic Gap

The microscopic physical void separating the presynaptic terminal from the postsynaptic receptor membrane.

Neurotransmitters

Chemical messengers stored in vesicles that diffuse across the synaptic gap to bind to matching receptor sites on a receiver cell.

Reuptake

The biological mechanism where unabsorbed neurotransmitters lingering in the synaptic cleft are reabsorbed by the presynaptic neuron.

Selective Serotonin Reuptake Inhibitors (SSRIs)

Antidepressant pharmaceuticals, such as fluoxetine (Prozac), that block the presynaptic reabsorption of serotonin to heighten its synaptic availability.

Randomized Controlled Trial (RCT)

An experimental research design where subjects are randomly assigned to active treatment or control conditions to measure intervention efficacy.

Response Rate

The percentage of clinical trial patients who demonstrate a $50\%$ or greater reduction in depression rating scores post-treatment.

Remission Rate

The percentage of clinical trial participants who present few or no detectable symptoms of depression at the conclusion of treatment.

Relapse Rate

The percentage of individuals who redevelop depressive symptoms following the cessation of therapeutic intervention.

Placebo Effect

A measurable clinical improvement resulting from an inert substance or sham treatment driven by the participant's psychological expectations.

Double-Blind Experiment

A methodological protocol in which neither the research subjects nor the administering evaluators know who receives the active substance versus the placebo.

Cognitive Appraisals

An individual's subjective interpretation and evaluation of their life experiences and events.

Beck's Negative Cognitive Triad

Depressive cognitive schemas characterized by deeply negative automatic assumptions regarding the Self, the World, and the Future.

Cognitive Behavioral Therapy (CBT)

A problem-solving psychotherapeutic modality that treats negative automatic beliefs as testable hypotheses, integrating cognitive restructuring and behavioral activation.

Cognitive Restructuring

A therapeutic strategy within CBT in which clients identify and substitute distorted, irrational cognitions with objective, balanced appraisals.

Behavioral Activation

A therapeutic CBT component where individuals engage in real-world behavioral exercises to enact coping mechanisms and rebuild positive reinforcement.

Prevalence Rates

The statistical proportion of individuals within a designated population who manifest a specific attribute or disorder during a defined timeframe.

Etiology

The underlying causes, origins, or explanatory factors that precipitate the onset of a disorder or clinical pathology.

Somatization

A clinical phenomenon where psychological pain or affective distress is reported primarily as physical, somatic symptoms such as headaches or stomach distress.

Reporting Bias

A distortion in epidemiological data caused by a patient's reluctance or unwillingness to disclose psychiatric symptoms due to cultural stigma.

Interpretation Bias

Diagnostic inaccuracies emerging when a clinician evaluates a patient's symptoms through their own subjective cultural assumptions.

Cultural Mismatch

A communicative and cultural discrepancy between a mental healthcare provider and a client that impedes accurate symptom appraisal.

Vocal Biomarkers

Objective paralinguistic acoustic properties, such as frequency, loudness, shimmer, and intonation, utilized to evaluate clinical depression across cultures.

Vulnerability Factors (Brown & Harris)

Enduring adverse social conditions—such as maternal loss before age $11$, lack of employment, or multiple young children—that heighten susceptibility to depression.

Provoking Agent

An acute, stressful life event (such as employment termination or relationship breakdown) that triggers a depressive episode in vulnerable persons.

Age Effects

Epidemiological variations occurring consistently across a person's lifespan independently of calendar time or generational cohort.

Period Effects

Uniform temporal shifts that simultaneously influence all age brackets and generational cohorts across a wider population at a specific point in time.

Cohort Effects

Variations in health or behavioral prevalence tied specifically to being born within a particular temporal generation or demographic era.

Body Mass Index (BMI)

An anthropometric calculation defined as body mass in kilograms divided by the square of height in meters ($\text{BMI} = \frac{\text{weight in kg}}{(\text{height in m})^2}$), where an index exceeding $30\,\text{kg/m}^2$ classifies clinical obesity.