AMBER LEDOUX - Drug Unit Review

Forensic Science and Drugs Review

Part 1: Definitions and Concepts

  • Drug: A natural or synthetic substance used to produce physiological and psychological effects.

  • Psychological Dependence: The use of a drug caused by underlying emotional needs.

  • Physical Dependence: Need for a drug arising from regular use; characterized by withdrawal sickness when use stops abruptly.

  • Narcotic Drugs: Drugs that relieve pain by depressing central nervous system functions.

  • Hallucinogens: Substances that cause changes in thought processes, perceptions, and moods.

  • Depressants: Drugs used to depress central nervous system functions.

  • Stimulants: Substances that increase alertness or activity while decreasing fatigue and appetite.

  • Club Drugs: Synthetic drugs commonly used in nightclubs, raves, and bars.

  • Anabolic Steroids: Synthetic compounds chemically related to testosterone, promoting muscle growth.

Short Answer Comparison

  • Psychological vs. Physical Dependence:

    • Psychological dependence is driven by emotional needs, where individuals might use drugs to fulfill these needs.

    • Physical dependence is characterized by withdrawal symptoms when the drug use is suddenly halted, leading to a physical need for the substance.

    • Thus, the core difference lies in the underlying motivation and the type of symptoms experienced during cessation of use.

Part 2: Drug Classifications

Classification Table

  • Morphine:

    • Classification: Opiate

    • Effects/Characteristics: Produces a “high” and drowsiness lasting 3-4 hours.

  • Marijuana:

    • Classification: Hallucinogen

    • Effects/Characteristics: Impaired thinking, memory, body movements, irritability, restlessness.

  • Cocaine:

    • Classification: Stimulant

    • Effects/Characteristics: Increased alertness, vigor, suppression of hunger, fatigue, and boredom.

  • MDMA (Ecstasy):

    • Classification: Hallucinogen

    • Effects/Characteristics: Hallucinogenic and amphetamine-like effects.

  • Anabolic Steroids:

    • Classification: Anabolic steroids

    • Effects/Characteristics: Accelerated muscle growth, changes in mood and personality; can lead to physical or psychological dependence.

Discussion Question

  • Dangers of Club Drugs (GHB and Rohypnol):

    • These drugs are central nervous system depressants linked to increased risks of sexual assault, robbery, and other crimes in social settings. Their use can impair judgment and reduce the ability to resist unwanted advances.

Part 3: Drug-Control Laws

  • Multiple Choice on Schedule I Drugs:

    • Correct Answer: B - They have a high potential for abuse and no accepted medical use.

Short Answer on Controlled Substances Act

  • Purpose and Impact:

    • The Controlled Substances Act aims to prevent and control drug abuse. It classifies dangerous substances, facilitating legal regulation, ensuring public health safety, and controlling illegal activity.

Part 4: Analytical Techniques

  • GC-MS Significance:

    • Gas Chromatography-Mass Spectrometry is crucial in forensic drug analysis as it separates compounds by retention time and peak intensity, allowing for accurate identification of substances in a sample.

Importance of Testing Methods

  • Forensic Chemists' Testing Practices:

    • Screening tests reduce the pool of possible substances, simplifying analysis. Confirmation tests validate initial screening results, ensuring accuracy and reliability in drug identification.

Part 5: Application of Knowledge

Reflection on Ethical Implications

  • Ethical Implications of Drug Use and Forensic Role:

    • Drug use and abuse have significant ethical impacts on communities, resulting in various social issues. Forensic scientists contribute by identifying and analyzing illegal substances linked to drug-related crimes, addressing societal concerns.