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Criminal Psychology & Investigative Truth-Finding (Hans Gross)

An authoritative adaptive curriculum based on Dr. Hans Gross's foundational treatise. Covers investigative methods, sense perception limits, memory reproduction, eyewitness illusions, and the psychology of deception.

35%
Mastery Probability (BKT)
Module 10 / 7 Lessons CompletedModule 4
Up Next:Lesson 1.1: The Investigator’s Mental Activity & Dangers of Bias
Weekly Behavioral Velocity: +18% AcceleratingCertification Target: 68% Ready

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Open Analytics & Goals
Time Spent This Week
2.3h / 3.8h Goal
60% of weekly study target
Lessons Completed
0 / 7
7 remaining in syllabus
Missed Schedules
0
All scheduled alarms met ✓
Daily Review Deck (SM-2)
4 Cards Due

Course Syllabus & Modular Breakdown

Click any lecture to launch reading materials, case study breakdowns, and formative quizzes.

4 Modules Total
Module 1

Module 1: The Psychology of the Investigator & Truth-Finding

0 / 2 Completed

Mental activity of the criminalist, dangers of prepossession, and deductive inference rules.

Lesson 1.1: The Investigator’s Mental Activity & Dangers of Bias
20 mins • Analyze Hans Gross’s foundational laws on judicial psychology and overcoming confirmation bias.
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Lesson 1.2: Inference, Probability & Circumstantial Judgment
22 mins • Examine the logic of circumstantial evidence and the mathematics of moral certainty.
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Module 2

Module 2: Sense Perception & Crime Scene Illusions

0 / 3 Completed

Physical limitations of vision, auditory localization errors, and tactile misunderstandings in witnesses.

Lesson 2.1: The Limits of Sight, Color Vision & The Blind Spot
24 mins • Understand the biological and optical constraints that distort eyewitness visual accounts.
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Lesson 2.2: Auditory Localization, Echoes & Echo Illusions
20 mins • Analyze acoustic reflection, gunshot direction estimation, and verbal mishearings.
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Lesson 2.3: Video Masterclass — Laboratory Demonstrations of Eyewitness Optical & Sensory Illusions
18 mins • A multimedia video case lecture demonstrating the psychophysics of eyewitness optical limits, the Purkinje effect at dusk, and acoustic echo traps.
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Module 3

Module 3: Memory Reproduction, Association & False Recollection

0 / 1 Completed

The essence of memory, forms of reproduction, memory illusions, and unconscious transference in witnesses.

Lesson 3.1: The Mechanism of Memory Reproduction & Distortion
22 mins • Study how memories are reconstructed rather than played back like photographic records.
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Module 4

Module 4: The Psychology of Deception & The Lie

0 / 1 Completed

General theory of the lie, pathoformic deception, physiological indicators, and cognitive load in interrogation.

Lesson 4.1: The Anatomy of the Lie & Pathoformic Deception
25 mins • Examine Hans Gross’s taxonomy of deliberate falsehoods, half-truths, and pathological deception.
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