Spanish and Portuguese at home: will she mix them up?

The sources read for this site do not test whether two languages that sound alike, such as Spanish and Portuguese, get mixed more or less than two that sound different, so we cannot say she will or will not. King and Mackey, in The Bilingual Edge, call mixing two languages in one sentence a short-term phase for a young child, normal and quite common, and not a sign of confusion. This page sets out that evidence, then offers ways to keep the two languages apart, labeled as our suggestion.

What the sources say about mixing

In ch. 9, King and Mackey describe code-mixing as a young child combining words or structures from both languages in one sentence. Their reason: the child's two language systems, and the social rules for which language goes with which person, are still being sorted out. It is short-lived and it is not confusion. They separate it from code-switching, which a fluent bilingual does on purpose, and which they call a sign of mastery.

The books read so far say nothing about languages that sound alike, so we will not guess what they would say. If the language outside your home is a third language for her, ch. 11 also applies: King and Mackey say learning three or more languages is not significantly riskier or harder than learning one or two, but usually needs more deliberate balancing.

What one parent, one language adds

One parent, one language (OPOL) means each parent always speaks one language to the child. King and Mackey, in ch. 6, say it is popular and often works, and that its appeal is clarity: the child learns which language belongs to which person. They also say that without deliberate protection of the weaker language, a child who understands it but does not speak it is a common result. Their case is a German and English household, not a close pair.

Two points keep this in proportion. A rule about who speaks what says nothing about how many hours each language gets, and for parents whose first languages differ, King and Mackey advise roughly equal quantity and quality of exposure in both. And the book's list of myths says strict separation is not required: quantity and quality of input matter more than rigid rules. Keeping the two apart is an option the sources allow, not a requirement they set.

Ways to keep the two apart (our suggestion)

This section is our practical suggestion, consistent with OPOL. Nothing read for this site tests it, with close languages or any other pair, and it promises no outcome.

• People. Each adult uses one language with her. If one adult speaks both, decide in advance which one to use with her.
• Places. Tie a language to a place, such as the kitchen, the car or a relative's home.
• Times. Tie a language to a recurring moment, such as dinner, bedtime or a Sunday call. The plan's family ritual activity uses the same idea.

If she mixes the two in a sentence, King and Mackey say it needs no correction. If you want to steer, the mixing guide on the Today screen lists five parent responses. In Elizabeth Lanza's research on two families, as King and Mackey report it, the two one-language ones were linked to stronger skills in the language pushed. That is not a test with close languages. If you worry about how much she speaks in any language, a pediatrician or a speech-language professional is the right person to ask.

How the plan and the audit handle two languages

In the setup you name the language to protect, the language spoken around you, and optionally another language to protect. For Spanish and Portuguese at home, one goes in as the language to protect and the other as the added language. With an added language, the minutes you ask for become one daily budget, split evenly between the protected languages. The community language is left out of the split.

ILLUSTRATION from the plan code, with invented inputs: a 5-year-old, Spanish to protect, English around the family, Portuguese added, a conversation goal, both parents at home, some current exposure. At 20 minutes a day the plan gives Spanish 10 minutes and Portuguese 10, each with the same mix of talk, songs, reading and family ritual. At 15 minutes, Spanish gets 8 and Portuguese 7, because the first language takes the extra minute. The even split is the app's own design, and nothing read tests whether it produces balance (UNVERIFIED).

The Family Language Audit takes each caregiver's weekly hours and the language used. Once a language is added, the page stops giving the two-language 80% verdict and compares each language's share of waking hours with an even split across all the languages, community language included, and flags one under half its fair share. That cutoff is a proxy the app chose, not a research threshold. The audit counts hours. It cannot see whether she mixes.

ILLUSTRATION with invented hours, run through the audit code: the same 5-year-old. The app's waking-hours figure for ages 3 to 5 is 80.5 a week, a working estimate with no cited source (UNVERIFIED). The mother logs 15 hours in Spanish, the father 10 in Portuguese and school 25 in English. The shares are 19 % Spanish, 12 % Portuguese and 31 % English. An even split is 33 %, and half of it is 16.7 %, about 13.4 hours, so Portuguese is flagged and Spanish sits just above the line.

One thing to know: with an added language, the audit does not show the two-language bar or the OPOL note. Its headline says the 80% line is King and Mackey's figure for two languages, and the per-language section is the result. Portuguese hours count there, so the week above reads 19 % Spanish, 12 % Portuguese and 31 % English.

What is still unknown

• Whether languages that sound alike are mixed more or less than languages that sound different. The books read so far do not cover it.
• Whether separating by people, places or times reduces mixing, for this pair or any other. It is our suggestion, not a tested method.