Are You Wasting Half Your Study Time Without Realizing It?

Research shows most students waste hours studying ineffectively. A 2013 study in Psychological Science in the Public Interest found that popular techniques like re-reading and highlighting are among the least effective ways to learn [1].

Let's fix that.

The Problem: Your Brain Forgets Fast

The "forgetting curve," discovered by Hermann Ebbinghaus in 1885, shows we forget about 70% of what we learn within 24 hours if we don't review it [2]. This means if you're just reading your notes once, most of that information disappears quickly.

Two Proven Solutions That Work

Research from cognitive science points to two main techniques that actually work:

1. Active Recall: Testing yourself instead of just re-reading
2. Spaced Repetition: Reviewing information at specific intervals

A 2013 meta-analysis of 217 studies found that practice testing (active recall) produced the largest effects on learning compared to other techniques [1].

How to Study Better: Simple Steps

1. Use Flashcards Correctly

• Make simple cards with one fact per card
• Test yourself regularly
• Apps like Anki use spaced repetition algorithms to schedule reviews [3]

2. Try the "Blurting" Technique

• Write everything you remember about a topic without looking at notes
• Check what you missed
• Fix your mistakes
• A 2011 study showed students who tested themselves remembered 50% more information a week later compared to students who just studied [4].

3. Practice Real Questions

• Use past exams or question banks
• Time yourself
• Review mistakes immediately

Research shows that practicing with real test questions improves scores more than just studying notes [5].

4. Track What You Study

• Keep a log of topics you've studied
• Note when you last reviewed each topic
• Schedule reviews based on how well you remember

Passive vs. Active Study Methods

Reading notes is a passive method where you simply look at information. Studies show this leads to poor retention—only about 20% after one week. An example is reading through a textbook chapter without engaging with the material. While it feels productive, your brain isn't forming strong memory connections.

Highlighting text is another passive approach where you mark important points in your notes or books. Like reading, it also results in poor retention (about 20% after one week). Many students highlight entire paragraphs, which doesn't force your brain to decide what's truly important.

In contrast, active recall is a method where you test yourself from memory. This approach leads to excellent retention—about 80% after one week. Using flashcards is a perfect example, as they force you to retrieve information rather than just recognize it. This strengthens memory pathways in your brain.

Spaced repetition involves reviewing information at increasing intervals over time. This active approach also results in excellent retention (around 80% after one week). Scheduling reviews just before you're likely to forget information helps move knowledge into long-term memory efficiently.

According to data from Dunlosky et al. (2013), the difference between passive and active methods is dramatic—a four-fold increase in retention after just one week [1].

7-Day Plan to Fix Your Study Habits

Day 1: Set Up

• Pick your 3 hardest topics
• Create 10 flashcards for each topic
• Download a spaced repetition app like Anki (free) [3]

Day 2-3: Start Active Recall

• 20 minutes: Review flashcards
• 20 minutes: Practice "blurting" on Topic 1
• 20 minutes: Answer 5 practice questions

Day 4-5: Build the Habit

• 20 minutes: Review due flashcards
• 20 minutes: Practice "blurting" on Topic 2
• 20 minutes: Answer 5 more practice questions

Day 6-7: Test Your Knowledge

• 30 minutes: Review all due flashcards
• 30 minutes: Mixed practice questions
• 15 minutes: Plan next week's topics

Common Mistakes to Avoid

• Mistake: Making flashcards too complex
• Fix: One fact per card
• Mistake: Cramming the night before
• Fix: Study a little each day (research shows this wo
• rks better) [6]
• Mistake: Not sleeping enough
• Fix: Get 7-9 hours (sleep helps move information to long-term memory) [7]

The Bottom Line

If you're not using active recall and spaced repetition, you're likely wasting at least half your study time. By making these simple changes, you can learn more in less time.

What study method will you try first? Let me know in the comments!

Sources

• [1] Dunlosky, J., et al. (2013). Improving students' learning with effective learning techniques: Promising directions from cognitive and educational psychology. Psychological Science in the Public Interest. https://journals.sagepub.com/doi/full/10.1177/1529100612453266
• [2] Murre, J. M. J., & Dros, J. (2015). Replication and analysis of Ebbinghaus' forgetting curve. PLOS ONE. https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0120644
• [3] Anki - powerful, intelligent flashcards. https://apps.ankiweb.net/
• [4] Karpicke, J. D., & Blunt, J. R. (2011). Retrieval practice produces more learning than elaborative studying with concept mapping. Science. https://www.science.org/doi/10.1126/science.1199327
• [5] Adesope, O. O., et al. (2017). Rethinking the use of tests: A meta-analysis of practice testing. Review of Educational Research. https://journals.sagepub.com/doi/10.3102/0034654316689306
• [6] Cepeda, N. J., et al. (2008). Spacing effects in learning: A temporal ridgeline of optimal retention. Psychological Science. https://journals.sagepub.com/doi/10.1111/j.1467-9280.2008.02209.x
• [7] Rasch, B., & Born, J. (2013). About sleep's role in memory. Physiological Reviews. https://journals.physiology.org/doi/full/10.1152/physrev.00032.2012