Extensive vs intensive reading.

Reading research has a vocabulary for two opposite ways of reading a foreign language. The names are deliberately blunt: extensive reading means lots of pages, mostly easy material, fast. Intensive reading means a small piece, slow, every word looked up. They're both useful. They're not interchangeable.

Extensive: the high-volume play

You read a lot. You pick books at or just slightly above your level. You don't translate. You don't analyze grammar. When you don't know a word, you either guess it or look it up quickly and move on.

The goal is volume — words on the page, hours in the book. Krashen's argument: comprehensible input, in large quantity, is what builds long-term ability. If you read a million words of pleasure-reading Spanish, you'll have a different relationship with Spanish than if you read 50,000 words of carefully analyzed Spanish.

Most adult learners under-do this. They feel like they're not "really learning" unless they're stopping every sentence. They are. They're just learning slowly.

Intensive: the surgical work

You take a paragraph, a poem, a song lyric, a short passage. You read it slowly. You look up every word. You parse every grammatical structure. You may translate it sentence by sentence. You may compare it to a published translation.

This is how you nail down a specific construction. If you keep stumbling over Spanish subjunctive in subordinate clauses, working through five paragraphs intensively will teach you more than ten more chapters of fluent reading would have.

Most adult learners over-do this. They open a novel, treat the first paragraph intensively, run out of energy, close the book.

The right ratio

For most learners past the absolute beginner stage, the ratio is something like:

• Extensive: 80-90% of reading time. Real books, fluent pace, light lookups.
• Intensive: 10-20% of reading time. One short text per week, deeply analyzed.

Many people invert this. They spend hours on textbook excerpts and never open a real book. The result: they're great at sentences in isolation and stumble on connected prose.

Knowing which mode you're in

Are you reading for the story or to study the language? If the answer is "the story," you're extensive — keep going, only look up words that block comprehension. If the answer is "to study the language," you're intensive — slow down, dig in, treat the passage as material rather than narrative.

You can switch within a session. Read a chapter extensively (20 minutes). Then go back to the most interesting paragraph and work through it intensively (10 minutes). The combination is more powerful than either alone.

What goes wrong with each mode

Extensive failure: You read but absorb nothing because you understand only 60% of what you're reading. The level is too high. Drop down a notch.

Intensive failure: You spend 90 minutes on three sentences. You've learned three sentences. That's not a great ratio. Pick a shorter passage, or work through it faster.

What this means in practice

Read books — many of them, at the right level, fluently. Once a week, take a short passage you found striking and work through it carefully. Don't apologize for either mode. They do different things.

For the long version, the guide walks through the whole reading-based method. The glossary entries on extensive reading and intensive reading have more detail.

Rule of thumb: if the book has stopped being a book and become a worksheet, you're in intensive mode and should reset.