76842
I understand that につれて can be used to express changes brought about by A on B
where the extent of change in A has a proportional effect on B.

For example, "感染者が増えるにつれて、亡くなる人がどんどん増えていく。"

However, does the direction of this change have to be the same?

For example, can I say something like:

> 雨が降るにつれて、空を飛んでいる鳥が減っていく。
CC BY-SA 4.0
2020-04-26T08:31:44.877
76834
2020-04-26T14:17:05.417
36831
question
grammar
When using につれて, does the direction of change have to be the same?
No, they don't have to be the same. You can easily use this to describe
inverse relationships.

For example you could say things like:

> 晴れの日が増えるにつれて、鬱病患者が減っていく。( As the number of sunny days increases, the number
> of people with depression decreases)

Here are some more examples:

  * 失業率が低下するにつれ，賃金は上昇する傾向がでてきます (Describing the [Phillips curve](https://en.wikipedia.org/wiki/Phillips_curve))

    * <https://www2.kumagaku.ac.jp/teacher/~sasayama/macroecon/lecture15.html>
  * 高度が増加するにつれて温度は下がる

    * [https://www.google.com/books/edition/%E6%B0%97%E5%80%99%E5%A4%89%E5%8B%95%E3%81%8C%E3%82%8F%E3%81%8B%E3%82%8B%E6%B0%97%E8%B1%A1%E5%AD%A6/LG4famj6-n0C?hl=en&gbpv=1&dq=%E9%AB%98%E5%BA%A6%E3%81%8C%E5%A2%97%E5%8A%A0%E3%81%99%E3%82%8B%E3%81%AB%E3%81%A4%E3%82%8C%E3%81%A6%E6%B8%A9%E5%BA%A6%E3%81%AF%E4%B8%8B%E3%81%8C%E3%82%8B&pg=PA29&printsec=frontcover](https://www.google.com/books/edition/%E6%B0%97%E5%80%99%E5%A4%89%E5%8B%95%E3%81%8C%E3%82%8F%E3%81%8B%E3%82%8B%E6%B0%97%E8%B1%A1%E5%AD%A6/LG4famj6-n0C?hl=en&gbpv=1&dq=%E9%AB%98%E5%BA%A6%E3%81%8C%E5%A2%97%E5%8A%A0%E3%81%99%E3%82%8B%E3%81%AB%E3%81%A4%E3%82%8C%E3%81%A6%E6%B8%A9%E5%BA%A6%E3%81%AF%E4%B8%8B%E3%81%8C%E3%82%8B&pg=PA29&printsec=frontcover)
  * 光は距離が増加するにつれて暗くなっていきます (describing an [inverse square law](https://en.wikipedia.org/wiki/Inverse-square_law))

    * <http://jp.littlebits.com/browse-lessons/space-lesson-inverse-square/>
CC BY-SA 4.0
2020-04-26T12:14:01.430
76842
2020-04-26T14:17:05.417
2020-04-26T14:17:05.417
10045
10045
76834
answer