Comprehensive Step-by-Step Guidance for Exam 2 Study Guide – Introduction to Psychology

Q1. Explain the role that light plays in our circadian rhythm and melatonin production. What hue of light plays a particularly large role?

Background

Topic: Biological Rhythms and Sleep

This question tests your understanding of how environmental cues, especially light, influence our internal biological clocks (circadian rhythms) and the hormone melatonin, which regulates sleep-wake cycles.

Key Terms and Concepts:

• Circadian Rhythm: The body's natural 24-hour cycle that regulates sleep, wakefulness, and other physiological processes.

• Melatonin: A hormone produced by the pineal gland that promotes sleepiness; its production is influenced by light exposure.

• Light Hue: The color or wavelength of light, with blue light being particularly influential.

Step-by-Step Guidance

1. Start by defining what circadian rhythms are and their role in regulating sleep and wakefulness.

2. Explain how the presence or absence of light signals the brain to adjust the production of melatonin.

3. Identify which part of the brain (the suprachiasmatic nucleus) receives light information and how it communicates with the pineal gland.

4. Discuss which hue (color) of light has the strongest effect on melatonin suppression and circadian rhythm shifting.

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Q2. What are the different stages of sleep? What activity and dreaming behaviors occur in each stage of sleep?

Background

Topic: Sleep Stages and Sleep Architecture

This question assesses your knowledge of the various stages of sleep, including their physiological characteristics and associated behaviors such as dreaming.

Key Terms and Concepts:

• NREM Sleep: Non-rapid eye movement sleep, including stages 1-3 (or 4, depending on classification).

• REM Sleep: Rapid eye movement sleep, associated with vivid dreaming.

• EEG Activity: Brain wave patterns that distinguish sleep stages.

Step-by-Step Guidance

1. List the main stages of sleep (NREM stages 1-3 and REM sleep).

2. Describe the key features of each stage, such as brain wave activity, muscle tone, and eye movements.

3. Explain when dreaming is most likely to occur and how it differs between REM and NREM sleep.

4. Note any unique physiological events (e.g., sleep spindles, K-complexes) associated with specific stages.

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Q3. What are the five sleep disorders covered in the textbook? Be able to identify the key features of these sleep disorders.

Background

Topic: Sleep Disorders

This question tests your ability to recognize and differentiate between common sleep disorders, focusing on their defining symptoms and characteristics.

Key Terms and Concepts:

• Common sleep disorders may include insomnia, narcolepsy, sleep apnea, night terrors, and sleepwalking (check your textbook for the exact five).

• Key features: symptoms, causes, and typical age of onset.

Step-by-Step Guidance

1. List the five sleep disorders as presented in your textbook.

2. For each disorder, write a brief definition and its main symptoms.

3. Note any distinguishing features that help differentiate one disorder from another.

4. Consider examples or case studies that illustrate each disorder.

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Q4. Distinguish myths from realities concerning hypnosis.

Background

Topic: Hypnosis and Consciousness

This question examines your understanding of common misconceptions about hypnosis versus what research actually shows.

Key Terms and Concepts:

• Hypnosis: A trance-like state of focused attention and increased suggestibility.

• Common myths: e.g., loss of control, superhuman abilities, truth-telling.

• Realities: e.g., voluntary participation, limited effects, individual differences.

Step-by-Step Guidance

1. List several common myths about hypnosis.

2. Contrast each myth with what scientific evidence actually shows.

3. Provide examples or research findings that support the realities.

4. Summarize why these myths persist despite evidence to the contrary.

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Q5. Identify possible influences on substance abuse. (Hint: think about sociocultural influences, addictive personality, learning and expectancies, and genetic influences.)

Background

Topic: Substance Use and Abuse

This question asks you to consider the multiple factors that contribute to substance abuse, including psychological, social, and biological influences.

Key Terms and Concepts:

• Sociocultural Influences: The role of peers, family, and culture.

• Addictive Personality: Traits that may predispose individuals to addiction.

• Learning and Expectancies: How experiences and beliefs shape substance use.

• Genetic Influences: Heritability and biological predispositions.

Step-by-Step Guidance

1. Define each influence (sociocultural, personality, learning, genetic).

2. Provide examples of how each factor might increase risk for substance abuse.

3. Discuss how these factors might interact with each other.

4. Consider research evidence supporting each influence.

Try solving on your own before revealing the answer!