Capstone Strand (synthesis only)

This is Unit Thirteen of Psychology, and it is unlike the twelve before it. There is nothing new here. No definitions, no mechanisms, no procedures — the reference book states outright that this unit introduces no new doctrine. Every entry is a capstone, and every one reaches back across the whole course. Several of them are about explaining something without reaching for the easy answer. Why a witness can be certain and wrong, without accusing them of lying. Why ordinary people participate in institutional harm, without reaching for individual defect. In both cases the easy explanation is the fundamental attribution error, and this course spent twelve units earning the right to refuse it. Two of them are usable rather than explanatory — a behavior change plan and a study system, each assembled from findings and each stating what it discards. And the last entry is the most unusual thing in the whole catalog. The course closes by stating which of its own findings are settled, which are contested, which have failed to replicate, and how a reader can check any of them. By the end you will be able to do five things. One: audit a published claim through six checks. Two: explain eyewitness error without dishonesty. Three: explain institutional harm without individual defect. Four: build a change plan and a study system from evidence. Five: say which findings are settled and which are not.

One capstone, and it is Unit One's whole methods run turned into an instrument. A published claim gets checked for sampling, design, operationalisation, statistics, replication and developmental confounds — six checks, before any sentence of it is accepted.

The audit.

Psych 1471 Reading a Psychology Headline End to End

Running a published claim through sampling, design, operationalisation, statistics, replication and developmental confounds before accepting any part of it. Six checks — and most published claims fail at least one.

One capstone, and it answers a question with legal consequences. How can somebody be completely certain and completely wrong? Not by lying — by five separate mechanisms, each documented in an earlier unit, all running at once.

Certain, and wrong.

Psych 1473 Why the Witness Was Certain and Wrong

Combining perception under stress, encoding limits, reconstruction, post-event information and source monitoring into one account. Each is ordinary; together they produce confident testimony that is false.

One capstone, and it takes something everybody has experienced and follows it through six systems at once — attention, working memory, consolidation, emotional regulation, stress hormones, and what actually gets done.

One deprived day.

Psych 1475 A Day Without Sleep, All Systems

Following a single sleep-deprived day through attention, working memory, consolidation, emotional regulation, stress hormones and performance. Four units, on one ordinary bad night.

One capstone, and it does something the perspectives entries in Unit One could not. It runs all six on a single act — and then separates the accounts that are compatible with each other from the ones that genuinely conflict.

One act, six accounts.

Psych 1477 The Same Behavior, Six Perspectives

Producing six accounts of one act and identifying which are compatible and which genuinely conflict. Most of them are compatible, which is the result — and it is not the result people expect.

One capstone, and it is the most practical entry in the course. Every tool from the learning and motivation units, applied to changing one behavior — with each failure mode anticipated rather than discovered.

One habit, every tool.

Psych 1479 Building One Habit, Every Tool

Combining reinforcement schedules, shaping, modeling, self-efficacy and intrinsic motivation, and anticipating each failure mode. Five mechanisms, and a named way each one can break.

One capstone, and its most useful move is negative. It builds a study system from the memory research — and it discards what the evidence does not support, which includes several things people are confident about.

A system, from the evidence.

Psych 1481 From Memory Research to a Study Plan

Combining encoding depth, spacing, retrieval practice, interference management, sleep and arousal into one plan — and discarding what the evidence does not support. The discarding is the part most study advice skips.

One capstone, and it is the hardest thing in the course to accept. Institutional harm explained through role, norm, obedience, conformity, deindividuation and diffusion — with an explicit instruction not to reach for individual defect, because that reach is the error the course has been correcting since Unit Eleven.

Ordinary people.

Psych 1483 Why Ordinary People Did It

Combining role, norm, obedience, conformity, deindividuation and diffusion into one account without reaching for individual defect. Six processes, and none of them requires an unusual person.

One capstone, and it is the only entry in the course that spans a whole lifespan. One person traced from infancy through late adulthood on five threads at once — temperament, attachment, cognitive stage, psychosocial conflict, and trait stability.

One life, followed.

Psych 1485 A Life Across the Lifespan

Tracing temperament, attachment, cognitive stage, psychosocial conflict and trait stability from infancy through late adulthood. Five threads, and they do not all move at the same rate.

One capstone, and it ends where the treatment unit ended — but with something added. A complete formulation at three levels, and then a statement of what each level can and cannot reach, which is what stops a plan overpromising.

One case, three levels.

Psych 1487 One Person, Three Levels, One Plan

Integrating biological, psychological and sociocultural levels into a treatment plan, and stating what each level can and cannot reach. Naming the limits is part of the formulation.

One capstone, and it is the most unusual entry in the entire catalog. A course closing by sorting its own contents — which findings are settled, which are contested, and which have failed to replicate — and then telling a reader how to check any of them without taking the course's word for it.

The closing entry.

Psych 1489 What This Course Can and Cannot Tell You

Stating which of the course's findings are settled, which are contested, which have failed to replicate, and how a reader can check any of them. It ends by handing over the means to audit itself.

Five things you can now do, and Psychology is complete. You can audit a published claim through six checks — sampling, design, operationalisation, statistics, replication, developmental confounds — before accepting a sentence of it. You can explain eyewitness error without reaching for dishonesty: perception under stress, encoding limits, reconstruction, post-event information, and misattributed sources, all running at once. You can explain institutional harm without reaching for individual defect — through role, norm, obedience, conformity, deindividuation and diffusion, none of which requires an unusual person. You can build a behavior change plan and a study system out of the evidence, with the failure modes anticipated and the unsupported advice discarded. And you can say which of this course's findings are settled, which are contested, and which have failed to replicate — and check any of them yourself.