Right-click on the clip you want to copy the attributes from and select Copy.
Then select the clip or clips on your timeline you want to apply those attributes to, right-click and select Copy Effects and Adjustments.
Thank you for your reply. What you say I have actually tried out before. But my problem was precisely that - as you say - all the effects were copied along with the adjustments. In many cases I would not want that - I would only want the adjustments alone to be copied. Can I do that in Premiere Elements 12?
You might want to look into the concept of Adjustment Layer which is offered in Premiere Elements 12/12.1 and 13/13.1.
Please see the details in the following link and determine if that works for you.
If you did use what was suggested previously, it is Copy and then Paste Effects and Adjustments, not Copy Effects and Adjustments.
You can also copy only one adjustment to other clips. Put the clip in selection so that at the right side of the screen the adjustments are visible.
Right click on that adjustment that you want to copy. There is an option copy or something like that (don't have the program here ...).
Select than the targetclip and again at the rightside in the screen where the adjustments are, you can paste this adjustment by choosing paste in the mousemenu
You will have to paste it also for all other clips you want the adjustment on (so this step is not possible for all targetclips together ...)