Approaches to Synthesising Research Findings

Synthesis is one of the highest-order intellectual skills required in Extended Investigation. It is the capacity to take disparate findings — from different sources, methods, and perspectives — and integrate them into a coherent, unified understanding that goes beyond what any single source provides.

What Is Synthesis?

Synthesis is not summarising. It is not reporting what each source says, one after another. Synthesis involves:
- Identifying relationships between findings
- Drawing integrated conclusions that emerge from the combination
- Resolving apparent contradictions by understanding their sources
- Building a new, more complete picture from multiple partial ones

KEY TAKEAWAY: Synthesis produces statements the literature itself does not explicitly contain. When you write “Taken together, the evidence from Smith, Jones and Lee suggests that X is a more significant factor than Y under conditions of Z,” you are synthesising — not summarising.

Synthesis in the Literature Review

The literature review is the primary site of synthesis in your report. Its purpose is to synthesise what is known, identify what is debated, and locate the gap your investigation addresses.

Moving from Description to Synthesis

Descriptive (lower level):
“Smith (2020) found that X. Jones (2019) found that Y. Lee (2021) found that Z.”

Analytical (better):
“Smith (2020) and Jones (2019) both found associations between X and wellbeing, though they used different measures. Lee (2021) challenged these findings, arguing that the associations disappear when controlling for Z.”

Synthetic (highest level):
“The evidence on X and wellbeing is mixed. While correlational studies consistently find positive associations (Smith, 2020; Jones, 2019), experimental designs suggest the relationship is mediated by Z (Lee, 2021). This discrepancy may reflect methodological differences rather than a genuine contradiction — raising the question of whether X influences wellbeing directly or only indirectly through Z. This investigation addresses that question by…”

Approaches to Synthesis

Thematic Synthesis

Organise findings by theme, not source. Under each theme, integrate what multiple sources contribute:
- Where do they agree?
- Where do they differ, and why?
- What does the overall pattern suggest?

Narrative Synthesis

Tell the story of how knowledge on a topic has developed — how early findings were qualified, challenged or extended by later research. Particularly useful for historical or longitudinal topics.

Convergent Synthesis

Identify points where findings from different methods, populations or disciplines converge on the same conclusion. Convergence increases confidence — it suggests the finding is not an artefact of any one methodology.

Dialectical Synthesis

Acknowledge thesis and antithesis positions in the literature and synthesise a nuanced position that resolves or transcends the apparent contradiction:
- Position A: “X causes Y”
- Position B: “X does not cause Y”
- Synthesis: “X causes Y under conditions C, but not in the absence of C”

EXAM TIP: When asked to “synthesise” multiple sources on a topic, structure your answer thematically — not source by source. Show how the sources relate to each other on the relevant theme.

Synthesising Your Own Findings with the Literature

In the discussion section of your report, synthesise your findings with the broader literature:

1. Convergence: “My findings are consistent with Smith (2020), who also found…”
2. Extension: “My findings extend Jones’s (2019) work by showing this effect also applies in the VCE context…”
3. Contradiction: “My findings differ from Lee (2021), possibly because my sample differs in…”
4. Filling a gap: “My findings address the gap identified by Wu (2022), who called for research on…”

Synthesis and Argument Quality

Strong synthesis produces strong arguments. When you synthesise well:
- Your conclusions are grounded in a body of evidence, not a single study
- You have considered and addressed alternative interpretations
- Your claims are proportionate because you’ve seen the full complexity
- Your contribution to knowledge is clear

APPLICATION: Before writing your discussion section, create a two-column table: Column 1 lists each of your key findings. Column 2 lists the relevant literature for each finding (both consistent and contradictory). Then write the discussion from this table — the synthesis happens when you explain the relationships between columns.

COMMON MISTAKE: Treating synthesis as something that only happens in the literature review. Synthesis is also required in the discussion (integrating your findings with the literature), in the conclusion (drawing an integrated final answer to the research question), and throughout the report wherever multiple sources address the same point.