Nhắn tin và e-mail nhiều làm giảm IQ
Một nghiên cứu do hãng máy tính Hewlett Packard thực hiện cho thấy các nhân viên khi mất tập trung bởi e-mail, các cuộc gọi và tin nhắn điện thoại sẽ bị suy giảm chỉ số IQ cao gấp 2 lần những người hút cần sa.
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