B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
12%
12% -- annual sales growth rate for personal development and wellness nonfiction (2023)
Sales of personal development and wellness nonfiction grew by 12% annually over a five-year period based on 2023 NPD Group data.
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Lighthouse Research Team
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Evidence graded
Value
12%
Unit
Percentage
Data Vintage
2023
Entity
Geography
US
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
NPD Group
Primary
Tier C
https://www.onlitplusfort.com/books/book-genres-explained-a-guide-to-major-and-niche-genres-audience… ↗
Source Article
Book Genres Explained: A Guide to Major and Niche Genres, Audiences, and Expectations - On Lit Plus Fort
Book Genres and Their Defining Attributes
Book genres represent distinct categories of literature characterized by shared themes, storytelling techniques, and audience expectations. Understanding these genres is essential for authors, publishers, and readers alike, as it shapes the creation, marketi…
Original Research
NPD Group
· Original study ↗
Methodology
Cited to NPD Group 2023 data; secondary source
Methodology documented
Segmentation
IndustryPublishing
RegionUS
RoleAll marketers
Channelmulti-channel
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Plain Text
personal development and wellness nonfiction: 12% annual sales growth rate. Source: NPD Group (2023). Via Lighthouse Intelligence -- https://lighthousedata.io/data/personal-development-nonfiction-sales-growth
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<blockquote cite="https://lighthousedata.io/data/personal-development-nonfiction-sales-growth" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>12%</strong> -- annual sales growth rate for personal development and wellness nonfiction<br><small>Source: NPD Group (2023) · <a href="https://lighthousedata.io/data/personal-development-nonfiction-sales-growth" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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