Psychology Literature Review Example: Annotated Sample

Psychology literature reviews are among the most evidence-dense academic texts you will encounter. Substantive claims should be traceable to appropriate evidence. Every paragraph balances the weight of multiple studies, compares effect sizes, and uses methodological critique as the primary route to identifying a research gap.

This page gives you a complete illustrative paragraph from a master's-level psychology literature review, with every sentence labeled for its function. You will see how psychological writing moves from establishing a phenomenon to exposing a methodological weakness, introducing new evidence, and landing on a precisely defined gap.

Annotated Psychology Literature Review Sample

Topic: The Effect of Mindfulness-Based Interventions on Adolescent Anxiety

Sentence 1

"Mindfulness-based interventions (MBIs) have gained substantial empirical support for reducing anxiety symptoms across adult populations, with meta-analytic evidence indicating a moderate overall effect size (Goyal et al., 2014; Khoury et al., 2015; Goldberg et al., 2018)."

Sentence 2

"However, when these meta-analyses are disaggregated by age group, the effect sizes for adolescent samples (d = .32–.41) are notably smaller than those reported for adults (d = .56–.68), suggesting that the mechanisms driving MBI efficacy may not transfer uniformly across developmental stages (Carsley et al., 2017; Zoogman et al., 2015)."

Sentence 3

"A growing body of school-based MBI research with adolescents has attempted to address this discrepancy, with studies reporting mixed results: while some found significant reductions in self-reported anxiety (Biegel et al., 2009; Kuyken et al., 2013), others found no significant effect beyond waitlist control conditions (Felver et al., 2016; Dunning et al., 2019)."

Sentence 4

"These mixed findings have been attributed to several methodological limitations, including small sample sizes (median N = 34 across school-based MBI RCTs), lack of active control groups, and reliance on self-report measures without physiological corroboration (Dunning et al., 2019; Klingbeil et al., 2017)."

Sentence 5

"Furthermore, no published meta-analysis has examined whether intervention components (e.g., session frequency, facilitator training, parent involvement) moderate outcomes specifically for adolescents, limiting the field's ability to identify which MBI adaptations are most effective for this developmental stage."

Sentence 6

"This thesis addresses that gap by conducting a meta-regression of school-based MBIs for adolescents (ages 12–18), coding for intervention components as moderators of anxiety reduction outcomes."

Annotation Summary Table

Key insight: Methodological critique, synthesis, and gap statements express the writer’s analysis, but claims about study limitations and evidence gaps still require support from verified literature and a current search.

What Makes Psychology Literature Reviews Unique

• Effect sizes as evidence Sentence 2 uses specific d-values (d = .32–.41 vs. d = .56–.68) — not just "some studies found X, others found Y"

• Meta-analyses as anchor citations Sentence 1 cites three meta-analyses, not three single studies — in psychology, meta-analyses establish what is "known"

• Methodological critique as gap pathway Sentence 4 names concrete flaws (N = 34, no active control, self-report only) — the gap emerges from these flaws

• Precise gap language Sentence 5 does not say "more research is needed" — it names the exact missing analysis (moderator meta-regression for adolescents)

• Study positioning as bridge Sentence 6 tells the reader exactly what the study will do — method, population, analytical approach

Common Mistakes in Psychology Literature Reviews

• Citing single studies instead of meta-analyses for established phenomena "Smith (2018) found MBIs reduce anxiety" Start with the meta-analysis: "Meta-analytic evidence indicates MBIs reduce anxiety (Goldberg et al., 2018). Single-study claims should be reserved for emerging or mixed findings."

• Reporting effect sizes as "large" or "small" without numbers "The effect was smaller for adolescents" Give the values: "d = .32–.41 for adolescents versus d = .56–.68 for adults (Carsley et al., 2017)." In psychology, the number is the argument.

• Gap statement is "more research is needed" "More research on adolescent MBIs is needed" Specify the exact missing analysis: "No published meta-analysis has examined whether intervention components (session frequency, facilitator training) moderate outcomes specifically for adolescents."

• Treating correlational and experimental evidence as equal without signaling design Citing a cross-sectional study and an RCT as if they carry the same weight Signal design explicitly: "While experimental evidence suggests X (Author, Year), cross-sectional work has found Y (Author, Year), indicating the need for longitudinal replication."

• No methodological critique before the gap Gap appears without explaining why the existing literature is insufficient Build the critique first (sample sizes, measurement flaws, lack of active controls), then derive the gap from those specific flaws — not from a general sense that "more is better."

Psychology Writing Formula (Discipline-Specific Logic)

Psychology literature reviews do not follow a generic Topic → Evidence → Counter → Critique → Gap → Positioning sequence. The actual logic is:

Sentence 1 (Established phenomenon via meta-analysis): [Construct/Intervention] has [effect] across [population], supported by meta-analytic evidence (Author, Year; Author, Year).

Sentence 2 (Subgroup complication via effect size comparison): However, disaggregating by [moderator: age, gender, setting] reveals smaller effects for [subgroup] (d = X vs. d = Y), suggesting [developmental/contextual boundary] (Author, Year).

Sentence 3 (Current mixed evidence at the subgroup level): Recent [setting]-based studies of [subgroup] report conflicting results: some find [positive outcome] (Author, Year), while others report [null] (Author, Year).

Sentence 4 (Methodological critique — the engine of the gap): These inconsistencies reflect [specific flaws: small N, no active control, self-report only] (Author, Year).

Sentence 5 (Precisely defined gap): No [meta-analysis/method] has examined [specific missing analysis] for [population], limiting the field's ability to [practical implication].

Sentence 6 (Study positioning): This thesis addresses that gap by [method, population, analytical move].

Why this formula differs: Sentence 2 in psychology is almost always an effect size comparison across conditions — not a generic "counter-evidence" sentence. Sentence 4 (methodological critique) is the engine that drives the gap, because in psychology, gaps are justified by flaws in existing studies, not by absence alone.

How Acade Supports This Discipline-Specific Review

Acade is an AI academic research and writing assistant. It can help plan literature searches, organize notes, compare studies, develop an outline, draft synthesis-focused prose, translate academic material, and polish writing. Where citation features are included in the selected plan, it can also help format references.

Acade cannot verify that a gap is real, guarantee citation accuracy, replace disciplinary or clinical judgment, or take responsibility for authorship and submission. Check every source and follow institutional, ethical, and journal requirements. Product features, credits, and plan availability may change.

Tell Acade your psychology research question, populations, measures, study designs, and verified sources. Ask it to identify the function of each sentence, show where evidence or synthesis is missing, and propose the next revision without inventing sources or results.

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• Research Design Guide

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Compare All Annotated Examples

Return to the Annotated Literature Review Example hub to compare sentence-level writing across all eight disciplines, or use the complete dissertation and thesis guide for the broader literature-review workflow.