Monkey toy preference by Hassett et al.

Chapter 1

Background: what the paper is testing

1

Paper snapshot: species, core question, and headline result

2

Competing explanations: socialization vs biological predispositions

3

Human toy-preference evidence the study is often compared to

Chapter 2

Study design & subjects (how the test is set up)

4

Subjects and sampling (who the monkeys were)

2 subtopics

5

Extract inclusion/exclusion criteria and any missing-data rules from the Methods

6

Build a 1-page “sample description” table (sex, age range, N, housing) from the paper

7

Setting: housing/enclosure context and why it matters

1 subtopics

8

List contextual factors (group size, enrichment history, dominance/social structure) that could influence play

9

Design type: observational/quasi-experimental choices and tradeoffs

1 subtopics

10

Write a short strengths/limitations note: internal validity vs ecological validity in this design

Chapter 3

Toy categories & stimuli (what counts as “masculine/feminine”)

11

How the toys are categorized (masculine / feminine / neutral)

1 subtopics

12

Make a checklist of each toy/object used and its assigned category, with the paper’s rationale

13

Stimulus confounds: color, shape, motion, noise, manipulability

1 subtopics

14

Identify at least 3 physical-property confounds and propose 1 control toy per confound

15

Novelty and control objects (how “preference” is isolated)

Chapter 4

Measures & data collection (what was recorded)

16

Behavioral metrics: time, frequency, contact type

1 subtopics

17

Translate the paper’s behaviors into operational definitions (exactly what counts as ‘interaction’)

18

Coding and reliability (observer bias and agreement)

1 subtopics

19

Summarize how reliability was established (and what statistic would be ideal if not reported)

20

Preprocessing decisions: aggregation, outliers, and normalization

Chapter 5

Results & statistics (what they found and how strong it is)

21

Main statistical comparisons used in the paper

1 subtopics

22

Reproduce one key comparison in R/Python with mock data (same test, same logic)

23

Effect sizes and practical interpretation (not just p-values)

1 subtopics

24

Compute an effect size that matches the test type (and state what would count as ‘small/medium/large’)

25

Result visualization: what a clear figure would look like

26

Robustness: multiple comparisons, alternative models, sensitivity checks

1 subtopics

27

List possible robustness threats (multiple tests, non-independence, clustering) and one fix for each

Chapter 6

Interpretation, critiques, and implications (what it does and doesn’t show)

28

Main conclusion and key limitations

1 subtopics

29

Write a 5-sentence critical summary: conclusion, 2 strongest points, 2 biggest limitations

30

Alternative explanations (e.g., activity levels, object affordances, social dynamics)

31

Replications and related primate findings

1 subtopics

32

Create a mini annotated bibliography: 3 related studies and how their methods/results compare

33

Broader implications for development and gendered play debates

1 subtopics

34

Map the paper’s claims to 2 claims about human toy preferences (what transfers, what doesn’t, and why)