Petitioner is a native of China who came to the United States in 2001. He applied for asylum, withholding of removal, and protection under Convention Against Torture. After a hearing, an ALJ rejected all of the petitioner’s contentions and ordered him to be deported. The Board of Immigration Appeals adopted and affirmed the IJ’s decision.

Petitioner testified that he was married in 1986 and has one son. In September 1990, his wife was forced to undergo an involuntary abortion in China. When petitioner appeared at the scene and objected, the police were called. Petitioner was not detained, but allegedly spent the following decade in hiding and away from his family because he feared reprisal for his actions. Several years after the abortion, petitioner and his wife divorced in China.

Petitioner contends that if he was forced to return to China, he would be fined and imprisoned as a result of his resistence to the abortion. The IJ found petitioner not credible as a result of numerous implausible allegations about his activities from 1990 onward.

The IJ gave a thorough and persuasive account of her reasons for refusing to believe the petitioner. Adverse credibility findings receive substantial deference on appeal if they are “supported by specific cogent reasons.” Gao v. Ashcroft, 299 F.3d 266, 276 (3d Cir. 2002). The IJ adequately supported her finding that peti *196 tioner did not testify credibly. Although petitioner argues that the IJ’s analysis concentrated on collateral matters, we disagree. Her observations were logically tied to the more controversial points of the petitioner’s testimony, and furnished a sound basis for her findings.

We agree with the BIA that petitioner has not met his burden of proof and accordingly we deny the petition for review.