In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

将由母猴养大的猴子，以及由铁丝或绵制成的代母养大的猴子作比较，发现由代母养大的猴子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将养大的子，以及铁丝或绵布制成的代养大的子作比较，发现代养大的子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将由母猴养大的猴子，及由铁丝或绵布制成的代母养大的猴子作比较，发现由代母养大的猴子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将由母猴养大的猴子，以及由铁丝制成的代母养大的猴子作比较，发现由代母养大的猴子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将由母猴养大的猴子，以及由铁丝或绵布制成的代母养大的猴子，发现由代母养大的猴子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将由母猴养大的猴子，以及由铁丝或绵布制成的代母养大的猴子作比较，发现由代母养大的猴子变群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将由猴猴子，以及由铁丝或绵布制成代猴子作比较，发现由代猴子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将母猴养大的猴子，以及铁丝或绵制成的代母养大的猴子作比较，代母养大的猴子变得不合群且极具攻击性。

In the 1950s Harlow compared monkeys raised by their mothers with monkeys reared by wire or terrycloth surrogate mothers.

哈娄将由猴大的猴子，以及由铁丝或绵布制成的大的猴子作比较，发现由大的猴子变得不合群且极具攻击性。