# Children's Thinking by Robert Siegler — resale value

**Children's Thinking by Robert Siegler** — resale value from real closed eBay sales.

Values are medians of real closed eBay sales, updated 2026-06-18. They are estimates for reference, not offers or appraisals — condition, completeness and edition move them a lot, so compare against the sold listings before pricing anything.

## Check the market

- [Sold listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DRobert%2520Siegler%2520Childrens%2520Thinking%26LH_Sold%3D1%26LH_Complete%3D1%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-sold&p=md-sold) — the closed sales these medians are computed from
- [Live listings on eBay](https://junkpal.ai/api/go?to=https%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_nkw%3DRobert%2520Siegler%2520Childrens%2520Thinking%26mkcid%3D1%26mkrid%3D711-53200-19255-0%26siteid%3D0%26campid%3D5339166094%26toolid%3D10001%26mkevt%3D1%26customid%3Dmd-live&p=md-live) — what sellers are asking right now

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## Details

| Field | Value |
| --- | --- |
| UPC / EAN | 0805808841 |
| Brand | Robert Siegler |
| Published | 1978 |
| Publisher | Lawrence Erlbaum |
| Pages | 384 |
| Editions | 9 |
| Category | Psychology |

## Children's Thinking resale value

**Children's Thinking** by Robert Siegler (1978). Across 9 editions. Used-book value depends heavily on edition (first printing vs. reprint), condition, dust jacket, and whether it's signed. First editions and out-of-print titles command the biggest premiums.

### What drives the price

First editions/first printings, intact dust jackets, signatures, and unmarked pages are the top value drivers. Book-club editions and later reprints are worth far less.

## FAQ

**Is this an old or rare textbook?**

Published in 1978, this is a classic text, and its 9 editions indicate its enduring relevance in psychology.

**What is the ISBN for this book?**

The ISBN for this specific edition is 0805808841.

**Who is the author of Children's Thinking?**

The author of this psychology text is Robert Siegler.

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Full price guide: https://junkpal.ai/products/children-s-thinking-robert-siegler-ol9585485w
How these values are computed: https://junkpal.ai/methodology
Cite as: "JunkPal price guide value as of 2026-06-18, based on real sold listings (junkpal.ai)"