Too Many Frog Calls Can Make Choosing Hard
Key Vocabulary
| Word / Phrase | Meaning | Example |
|---|---|---|
| mate | an animal's partner for having young | The female frog listens for a mate. |
| call | a sound an animal makes to communicate | Each male frog makes a call. |
| speaker | a device that plays sound | The scientists played sounds from a speaker. |
| noise | many sounds that can make hearing difficult | The pond can have a lot of noise. |
| choice overload | a problem where too many choices make choosing harder | The frogs showed signs of choice overload. |
Article
Female Cope's gray treefrogs listen to male frogs before choosing a mate. The males call loudly at night. A new study found that choosing became harder when the females heard many calls at the same time. [1][2]
Scientists played frog calls from speakers. Sometimes a female heard two calls. Sometimes she heard eight calls. The scientists watched which call she moved toward. [1]
With two calls, the frogs usually made a choice. With eight calls, more frogs did not choose, and the frogs that did choose took more time. [1][3]
The study also tested noise. The scientists wanted to know if the problem was only that the calls were hard to hear. They found that the number of choices was important too. [1][2]
This problem is called choice overload. Choice overload means that having many choices can make choosing more difficult. The study was about frogs, so it does not show that people make choices in the same way. [1]
A frog pond can sound like a busy party. For a female frog, more voices do not always make the night easier. Sometimes two choices are simpler than eight.
Discussion Questions
- When do you find it hard to choose between many things?
- What animal calls do you often hear where you live?
- What kind of noise makes it hard for you to think?
- Where do people often have too many choices today?
- What would you like scientists to study next about animal choices?
References
- Smithsonian Institution, "Sensory Overload Makes It Harder for Female Treefrogs To Select a Mate."
- iScience, "Choice overload constrains mate choice independent of energetic masking."
- Nature, "Too much mate choice overwhelms frogs."
- EurekAlert!, "Sensory overload makes it harder for female treefrogs to select a mate."