"Causa y Efecto" (English: Cause and Effect) is a song by Mexican singer Paulina Rubio from her ninth studio album, Gran City Pop (2009).

[2] Frontman of Latin pop group Camila and music producer Mario Domm, announced on late 2008 he wrote a couple of songs for the singer's new album named "Cielo de Papel" and "Causa y Efecto".

[5] "Causa y Efecto" on contemporary hit radio in the United States on March 30, 2009,[6] and it was released worldwide one day later.

[11] In the United States, "Causa Y Efecto" entered at number forty on the Billboard Hot Latin Songs.

The music video for "Causa y Efecto" was directed by the Austrian director Rudi Dolezal and the cinematographic photography by Karsten "Crash" Gopinath.

[17] The official video begins with Rubio leaning on the back of her boyfriend (played by model Buddy Krueger), whom she suspects is unfaithful to her.

There are also scenes of Rubio playing her electric guitar wearing a purple mini dress— the same dress of Gran City Pop cover artwork —while stocking in front of a curtain with her image.

This is followed by a rock performance scene with her musicians in Miami City, where Rubio wears her characteristic sunglasses, her short-brimmed hat and her blonde hair blowing in the wind.

The clip shares similar sequences and scenes to the official video, but instead of appearing with her male musicians at the bar and under the bridge in Miami, Rubio appears with a group of female musicians in a colorful white room that includes huge colorful transparent plates, and hippie symbolism.

Rubio's first live performance of "Causa Y Efecto" was at the Latin Billboard Music Awards in Miami, Florida on April 23, 2009.

The stage featured their musicians and choreography alongside students from a local high school,[22] Rubio was one of the most expected artists of the night.

Rubio pretended to be a "queen" wearing a sequined mini-dress with a zig-zag stripe pattern, fuchsia fingerless gloves and a silver crown.